"It was one of the best days ever," said Matthew at a news conference where he was all smiles.
Matthew is a Colorado Springs, Colo., native, but has grown up a Pirates fan as his dad is a native of New Castle, Pa. His parents and sister made the trip with him and were all present at the lunch table with the reigning National League Most Valuable Player. Matthew's father, Rick, said 12-14 family members were in attendance for the game to watch his son take the mound.
"It's amazing, it's more than we ever could have wished for," Matthew's mother, Kim, said, fighting back tears. "I'm glad we get to do it with everything he's been through."
Matthew's interactions with McCutchen -- who he called his favorite player because "he's fast like me" -- didn't end after they ate. The duo played catch on the field, and Matthew saw McCutchen take batting practice up close and personal.
Matthew, an up-and-comer on the diamond where he mainly plays shortstop and pitcher, said he didn't ask for any tips from the five-year Major League veteran. In fact, it was the other way around.
"I need his advice," McCutchen said. "I'd put up my glove to catch, and he hit my glove every single time. I was like, 'All right, how do you do that?'"
"I'm pretty good to be playing MLB at 12 years old," Matthew joked.
Of course, Matthew doesn't get to play baseball as much as he'd like, dealing with hospital visits and various treatments, including chemotherapy. But, make no mistake, he laces up his cleats and puts on his glove as much as he can.
"He has handled everything like a champ," Kim added. "He very rarely complains. He still has days he doesn't feel good or aches or whatever. But he powers through and does what he has to do. He played baseball while he was still undergoing chemo."
And Matthew hasn't just played, he's played extremely well.
"He spent a week in the hospital, got out on Wednesday and threw a no-hitter on Saturday," Rick said. "I'm so proud of him."