Peralta grew up in Samana, Dominican Republic, but moved to Santo Domingo when he was 11 in order to train with his uncle. He did not own a baseball glove until he was 11 years old. He practiced his throwing with a lemon.

In 2009, the Baseball America Prospect Handbook rated Peralta as the 22nd-best prospect in the Brewers organization. They moved him up to #14 in the spring of 2010. Then, in the winter before 2011 spring training, they moved Wily up to third best prospect in the Brewers' farm system.

And in the springs of both 2012 and 2013, Peralta was rated as the #1 prospect in Milwaukee's farm system.

In 2011, Peralta led the Southern League in ERA (3.46).

May 9, 2014: After his mother's visit, Peralta was never better. Her first trip to the U.S. to see her son play was a big turning point for Wily. Logic says that he found success last season when he started consistently commanding his slider, controlling an off-speed pitch, and harnessing opposing hitters.

But here's a more quixotic notion: Maybe Peralta just needed some of Mom's home cooking.

Either way, Peralta was just starting his second-half surge last July 9, when his mother, Miledy, saw him pitch as a professional for the first time. Wily responded with his first career shutout, a two-hitter against the Reds at Miller Park.

"Oh, man," Peralta said, remembering the moment. "It was amazing, man. The first time my Mom saw me play? That's amazing."

Miledy Peralta is deathly afraid of flying and had long resisted her son's invitation to visit the United States. He'd signed with the Brewers in 2005 during a period when Milwaukee did not operate a Dominican academy, so he went directly to Arizona to begin his professional career in 2006.

"She doesn't like baseball," Peralta deadpanned. "She told me when I signed, 'The only time I'm going to put baseball on my TV is when you're in the big leagues and you're the starting pitcher.' "

That is not to say Miledy was not supportive of her son's baseball dreams.

To the contrary, she "always supported me, since I started when I was 11 years old," Wily said. "We had to move to the capital, because where I come from is so small. I had more chances to play in the capital, and she always supported that. I left when I was 11 years old with my uncle.

"She knew that was the only way I could do this. We wanted to do it the right way. I loved baseball and she let me go."

The uncle was named Marcio, Peralta's mother's brother. Wily attended a school with a strong baseball program and drew the attention of scouts, including those of the Brewers.

For his Major League start, Peralta worked at a snappier-than-usual pace while scattering four walks, two singles and a triple in the best start of his budding big league career. He threw 113 pitches.

Mom was waiting outside the clubhouse after the victory.

"After the game, she was crying," Peralta said. "After that, I just got it going."

Miledy stayed at her son's apartment for the next two months, and he enjoyed a solid finish to his first full season. They were together all offseason, too, at the family's home in Banao, Dominican Republic, about 45 minutes from the capital of Santo Domingo. Peralta also spent time in his hometown of Samana, a beach town in the northeast of the country, where he is trying to expand leagues for children interested in baseball.

"Whenever I go back there, I'm doing everything I can," Peralta said. "If you want to play baseball, you should have the opportunity."

With her son's success, Miledy has softened her stance on baseball.

"Now, she likes it," Peralta said. "She learned. Now, she asks me all kinds of questions."  (Adam McCalvy MLB.com 5/9/2014).

April 1, 2016: Wily Peralta knows pressure. The Brewers' choice to start opposite Giants ace Madison Bumgarner had never pitched an Opening Day, but he has swung for the fences in the Dominican Republic amid a star-studded field of big leaguers. If you don't think that constitutes pressure, you've never seen a group of Latin Americans play home run derby.

Five or six times over the past several winters, Peralta has gathered with the likes of Bartolo Colon, Robinson Cano, Nelson Cruz and Carlos Gomez at fields around the Dominican to play softball. Sometimes, they gather on New Year's Eve. Often, they never even get around to playing a real game, but that does not mean there's no competition.

"When you get into a home run derby, you want to show that you can win," said Peralta, who gets to channel his inner slugger. As a teenager, he tried out for the Brewers and other clubs as an outfielder before scouts focused on his sensational throwing arm and convinced him to convert.

"It's more fun than you can imagine," Peralta said. "I always get second place. [Mariners pitcher] Joel Peralta, he's always up there. Cruz always hits the farthest one, but he never hits the most. Two years ago, we [the pitchers] beat Gomez. He only hit, like, eight in the first round, and I hit 12. I was all over him. The whole next Spring Training, I let him know about it."

The pressure will be a different sort of intense at Miller Park at 1:10 p.m. CT, when Peralta becomes only the second international signee to start an Opening Day for the Brewers. Teddy Higuera started three season openers from 1986-88, but Higuera was an established professional when the Brewers purchased him from the Ciudad Juarez of the Mexican League in 1983. When Higuera made his big league debut in '85, he was already 27 years old. Peralta traveled a much longer road to this moment. The son of a fisherman, Peralta didn't have baseballs growing up, so he practiced his throwing mechanics with lemons. He did not start playing organized baseball until he was 11, but says he was touching 96 mph by the time he was 15.

Peralta's wife, Denny, and son, Wily Jr., were in the stands at Miller Park. Peralta's parents will wait for some sunshine later in the summer to attend in person, but will be watching at home in the Dominican. Will Peralta think about his long journey when he steps on the field Opening Day?

"Yeah, I'll think about that," Peralta said. "When I got here to the States, I didn't realize what Opening Day is like. Ever since I got to high-A, Double-A, I've been watching how excited people are for Opening Day. I'm really excited to be there. All those years in the organization, it's an honor. Finally, I made it." (A McCalvy - MLB.com - April 2, 2016)

May 5-9, 2016: Wily was on the paternity list.

TRANSACTIONS

In 2005, Peralta signed with the Brewers for a bonus of $450,000, out of Samana in the Dominican Republic. He was 16 years old. His buscon, or agent, was shopping to several teams as an outfielder due to his speed, athletic ability and raw power potential. But the Brewers were very impressed with his ability on the mound. So scouts Fausto Sosa Pena and Fernando Arango signed Wily.

January 15, 2016: The Brewers and Wily avoided arbitration by agreeing to terms on a one-year contract. 

Jan 13, 2017: Peralta and the Brewers avoided arbitration, agreeing on a one-year deal worth $4.3 million.

Dec 5, 2017: The Royals signed free agent Peralta.

Peralta generates velocity in the neighborhood of 93-98 mph for his explosive four-seam FASTBALL. That is because of his superb arm strength. His heater has some cutting and tailing action. He added a 91-95 mph two-seam sinker in 2011 that runs down and in to righthanders, jamming them and often breaking their bats.  And by 2015, Wily was throwing it almost half the time—a true sinker/slider 

He also has good tilt and sharp bite on his 82-85 mph swing-and-miss, slurvy SLIDER and really improved his deceptive 82-85 mph CHANGEUP starting in 2009, and improving its sink in 2011.  (May, 2016)

2016 Season Pitch Usage: 4-seam Fastball: 22.3% of the time; Sinker 40.4% of the time; Change 4.8%; Slider 32.4% of the time; and Curve .1% of the time.

2018 Season Pitch Usage: 4-seam Fastball 25% of the time, his Sinker 24.6%; Change 11.2%; and Slider 39.3% of the time. Average velocity: 4-seam 96.9 mph, Sinker 96.2, Change 86.6, and Slider 84.1 mph.

Wily needs to improve his command of his secondary, even though he doesn't walk a lot of guys.

In 2012, Peralta struggled with his mechanics, had trouble throwing strikes and allowed hitters to sit on his fastball. He allowed just four runs in his first three starts, but after a brief promotion to the Brewers—he gave up three hits and one run in his big league debut, a relief appearance on April 22—he returned to Nashville and couldn't get anyone out. His ERA swelled to 6.40 in late June, and his struggles cost him at least one chance to fill a hole in Milwaukee's rotation. Brewers officials grew quite concerned.

Wily finally was able to make adjustments—a key was closing his front side instead of flying open in his delivery—and pitched well enough to get a September callup to Milwaukee. He showed why he ranked No. 1 on this list a year ago, winning his first big league start against the Marlins and two-hitting the Mets for eight innings in his third.

Peralta has a simple, repeatable delivery, but it is not real smooth.

Wily throws on a downward plane and keeps his fastball down in the zone, inducing grounders when he isn't missing bats.

In 2013, the Brewers had their own "Wild Thing" in Wily Peralta.

That year, the 24-year-old was fifth in the National League in wild pitches with 12, and 18th in hit batters with seven.

And only seven N.L. pitchers threw more balls than he did. Peralta also had the fourth-highest BB/9 (3.58).

As of the start of the 2019 season, Peralta had a 48-52 career record, a 4.45 ERA having allowed 89 home runs and 792 hits in 739 innings.

Wily does a fine job of controlling the running game. He has quick times to the plate.

In 2012, he allowed only 9 stolen bases in 33 starts.