Holliday went 1-for-5 with a grand slam in Wednesday's 10-4 win over the Blue Jays.
Holliday certainly made the most of his first big-league homer -- the 20-year-old launched a 439-foot grand slam on a 0-2 pitch from Yerry Rodriguez, extending the Orioles lead to 8-3. While it was just the third hit for Holliday in 39 at-bats with Baltimore, he posted an .860 OPS with eight homers and seven steals in 63 games after he was sent back down to Triple-A Norfolk. With Jordan Westburg (hand) likely to join Jorge Mateo (elbow) on the injured list, Holliday should get the chance to prove himself as a regular in the majors.