FRESNO - An orange sunset sky lit up Chukchansi Park on Friday night as Jackson Flora strode to the mound for the start of his professional career.
Any butterflies the San Francisco Giants
' fourth overall pick might've felt certainly showed on the radar gun. His first pitch for the Class A San Jose Giants
clocked in at 96 mph, a strike.
Then his fastball ticked up to 97 mph as he threw four more high-90s heaters before striking out Fresno Grizzlies leadoff hitter Ashly Andujar looking at a 98 mph four-seamer painted on the strike zone's outside edge. The count full, Flora was just glad he didn't walk him.
Flora lifted his arms above his head and took a deep breath. Not just excitement to make his debut coursed through him, but so did the feeling of a dream come true.
The Pleasanton native who grew up a huge Giants fan as he learned his love of baseball was pitching with the orange and black "Giants" across his chest. His parents, Lisa and John, were in the stands watching, too.
Giants 2026 first-round pick Jackson Flora warms up before making his pro debut with the San Jose Giants in Fresno on Friday night. He allowed one hit, one walk and struck out two in one inning against the host Fresno Grizzlies. (Gary Kazanjian/For the S.F. Chronicle)
"I was a little extra juiced up," Flora said after his team's 8-5, 10-inning win. "You know, wearing a Giants uniform is pretty crazy. It still doesn't feel real. It's just baseball and I think sometimes I find myself kind of at night thinking, 'Dang, I'm with the Giants now.'"
The 21-year-old introduced his cutter and changeup alongside the fastball to the next batter, getting him to pop out. The next batter saw a bit of his mid-80s sweeper, which he grounded past the first baseman for a double - a ball that arguably should have been fielded by Jeremiah Jenkins. Flora walked the next batter, but wasn't rattled and bookended his inning by getting lefty Ronny Ugarte swinging through a hard 90 mph slider. The 6-foot-5 Flora immediately lifted his cap above his head and wiped his brow as the right-hander walked off the mound after 28 pitches.
His night was over, but his journey had just begun. He struck out two, walked one and allowed one hit over a scoreless frame.
Giants 2026 first-round pick Jackson Flora warms up as teammates watch before making his pro debut with the San Jose Giants at Chukchansi Park in Fresno on Friday. The San Jose Giants played the Fresno Grizzlies. (Gary Kazanjian/For the S.F. Chronicle)
Flora showed just a taste of what makes him one of baseball's most enticing young arms, a player who Baseball America ranks its 50th overall prospect.
His fastball looked explosive as advertised; he topped out at 98 mph, but a three-digit heater is in the tank. Along with the hard slider, Flora threw a sweeper (a softer slider) in the mid 80s and a changeup he also throws in the low-90s.
At the same time, his inexperience showed. Of his 28 pitches, 14 were for strikes.
"It wasn't perfect," Flora said. "But it was nice to get out there and compete and be in a game again."
Flora last pitched a scoreless inning at the team's Arizona complex.
Giants 2026 first-round pick Jackson Flora is shown warming up before making his pro debut with the San Jose Giants at Chukchansi Park in Fresno on Friday. The San Jose Giants played the Fresno Grizzlies. (Gary Kazanjian/For the S.F. Chronicle)
"The stuff was great," said farm director Kyle Haines. He watched on TV from Arizona, where he stayed to watch Flora's fellow 2026 draftees Carson Bolemon and Kaden Waechter throw to hitters at the Arizona complex.
"I think he handled it well," Haines said of Flora. "He is a fantastic competitor and you can feel that in conversations with him."
Twenty-eight pitches in an inning was about the limit for Flora as the Giants ease him into pro ball. His first game with San Jose came during the last weekend of the California League's regular season, but the team is playoff bound looking to defend its 2025 title.
Flora will be part of the run and pitch on turn, Haines said, and his pitch limit may tick up slightly for however long this run lasts.
"I kind of feel like the kid that does nothing on the school project and still gets an A," Flora said of joining the playoff-bound team.
Added Haines: "It's good for him to get those first pro innings out of the way this year so he can focus on next year and not be worried about the first pro inning, first outing."
Giants first-round pick Jackson Flora delivers a pitch during the San Jose Giants' game against the Fresno Grizzlies in Fresno on Friday. (Gary Kazanjian/For the S.F. Chronicle)
It's a new start and different feeling for a top pitching prospect who became a star at UC Santa Barbara as a workhorse and flamethrower. Flora struck out 133 in 102 innings at UCSB with a 1.06 ERA in 2026 before the Giants selected him in the first round in July.
Friday's one-inning outing was brief, but could be the start of a rapid rise for Flora.
"I told them that I was ready to go," Flora said. "It was nice that they believe in me and they trust me enough to let me come out here and compete and get some innings under my belt. It's one step closer to the goal and to me being able to come out here and play with this team and have some fun."
The Giants are lacking in high-end pitching prospects ready to crack the big leagues - the organization drafted accordingly in the 2026 draft - and Flora's résumé theoretically puts him at the front of the line for the big league consideration.
Giants first-round pick Jackson Flora is congratulated by a San Jose Giants coach after making his pro debut with a shutout inning against the Fresno Grizzlies on Friday. (Gary Kazanjian/For the S.F. Chronicle)
College pitchers drafted in the first round tend to move up the ranks quickly, a mold somewhat shaped by Pittsburgh Pirates ace Paul Skenes when he cracked the big leagues less than a year after being drafted out of Louisiana State.
Flora is likely to get an invite to big-league camp in spring training, lockout depending. For now, pitching in a game for the first time since May 30 for the UCSB Gauchos, he's hoping to get a little more efficient than a 28-pitch frame and learn how to pitch to the pro-level strike zone.
"It's a little different right now, because I'm not quite built up to go seven or eight innings yet, but just kind of continuing to learn how to pitch in the professional strike zone versus a college one," Flora said. "And how to pitch to hitters' weaknesses and to my strengths and be more efficient."
Giants 2026 first-round pick Jackson Flora relaxes after making his pro debut with the San Jose Giants at Chukchansi Park in Fresno on Friday. The San Jose Giants played the Fresno Grizzlies. (Gary Kazanjian/For the S.F. Chronicle)
Flora wasn't the only Giants top prospect making waves on Friday night. Josuar Gonzalez, the organization's No. 1 prospect, notched the game-winning hit in extra innings when he chopped a 3-0 pitch past the infield to score a pair of runs. Rod Barajas Jr. drove in two insurance runs with a double to right field.
Sixth-round pick Eric Nachtsheim out of McNeese State also made his pro debut, striking out a batter and allowing a run over one inning.
There's more to San Francisco with the Chronicle. Subscribe today for just 25¢.
This article originally published at Giants' top pick Jackson Flora excited after pitching shutout inning in pro debut .
