SAN FRANCISCO ̵
The 20-year-old homered in the first inning against the Giants opens Nick Vincent, his first in 14 major league games. His drive to the immediate center was measured at 111.3 mph and traveled an estimated 438 feet.
Toronto slugger added an even more impressive blast in the sixth off Reyes Moronta, a three-driving run estimated at 451 feet.
Two-sports star Danny Ainge was the youngest Blue Jay to homer, then on June 2, 1979 at. 20 years, 77 days old. Guerrero is younger with 18 days.
The son of Hall of Famer Vladimir Guerrero entered the day batting .191 with an RBI. The family already had cross-country history at Oracle Park – the older Guerrero won the 2007 Home Run Derby at the waterfront.