The youngster was hit in the head by a foul ball off Lilly's bat in the second inning on Thursday at Wrigley Field. Dominic's father, Peter DiAngi, was sitting next to the boy, didn't see the ball hit, but did see his son slump in his seat.
"It was something I'll never forget, the speed of that ball coming in and the face of my son looking up," Peter DiAngi told reporters.
The boy was in serious condition at Children's Memorial Hospital, recovering from a fractured skull and swelling around his brain. Lilly talked to the father on Friday and planned to visit after Saturday's game, bringing a baseball signed by the Cubs players, a bat signed by Mark DeRosa, and a Ryan Theriot glove and jersey, among other items.
"He's getting better, it sounded like," Lilly said Saturday. "His dad was pretty optimistic that he would be better today."
Lilly was not aware anyone was hit by the foul ball Thursday, and it wasn't until after the game when he found out it struck a boy.
"Unfortunately it happens a lot at ballparks throughout the country," Lilly said. "You go down the line and guys are signing autographs during [batting practice] and kids aren't paying attention. Unfortunately, it happens more than it should."
Whether he hit the ball or not, Lilly said he felt bad for anyone injured at a game.
"There have been times when I've been pitching and a guy's hit a ball that hits someone," Lilly said. "This happens to be a litle boy -- if it's a young woman or older man or whatever, it's still unfortunate. I think you try to avoid it and people are paying attention, but if they're sitting in the wrong spot, at the wrong time, you can't avoid it."
Carrie Muskat is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.