SCOTTSDALE, Ariz. -- In his first start since a strong Fall Stars Game performance, Nate Pearson tossed four perfect frames in Arizona Fall League action, leading Surprise in a 5-4 victory over Scottsdale that featured a walk-off single from Cole Tucker on Wednesday.
Pearson -- the Blue Jays' No. 4 prospect and No. 90 overall -- struck out five of the 12 batters he faced.
"It was great," Pearson said. "I had a bunch of momentum coming into today, and I was just trying to put up zeros on the board and give my team a chance to win."
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The 22-year-old right-hander threw 46 pitches on the afternoon, 32 of which were strikes.
Pearson had made just one start in 2018 coming into this year's Arizona Fall League due to an oblique injury and a broken ulna that came off a line drive.
He had allowed 14 earned runs in his first four Fall League starts and came into Wednesday's contest with an 11.37 ERA in 11 1/3 innings pitched.
"Obviously, my numbers aren't great," Pearson said. "Just shaking off a little bit of rust. I missed the whole year with injury, so I'm just trying to get in a groove and get some innings in."
After the game, Pearson said he was happy with his performance.
"I had a really good mix going," he said. "Slider and curveball were both there … obviously my fastball was great today."
Pearson was drafted by the Blue Jays with the 28th overall pick in 2017.
Cole Tucker -- the Pirates' No. 5 prospect -- put an exclamation point on Pearson's commanding afternoon with a two-hit effort, including a walk-off single in the bottom of the ninth.
"I just freaked out," Tucker said. "I was holding onto my bat. I just felt like a little kid."
Tucker wasn't shy to credit Pearson for a great afternoon.
"Oh my god, I never want to face him in my life, that's for sure" Tucker said.
"His fastball is electric," Tucker added. "When he's got his offspeed stuff on and in the zone like he did today, he is an unbelievable pitcher."
Tucker, a product of Mountain Pointe High School in Phoenix, also singled off a 3-2 count and scored on a wild pitch in the first inning.
"To come out and have a walk-off hit, that doesn't come around very often," he said. "I'm just soaking it in."