Of course, the pitcher is 21-years-old.
B.B. on the 22nd day of April. B = 2
His 30th birthday was 2-days earlier, April 20.
Twenty-One = 42 (Score of 4-2)
As for the pitcher involved, this game 87-days before his birthday (span of 88).
Today was also right for an 'at-bat' record.
At Bat = 44 (Ordinal); Brandon Belt = 44; 4/22/18 = 4+22+18 = 44