The two home runs and four hits marked new career-highs for the 21-year-old second baseman, who also stole his third base of the season, and he's now hitting .313 with 11 RBIs through his first 12 games.
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After he had singled in his first at-bat, Happ connected on his first home run of the season in the top of the third inning, when he took Winston-Salem starter Matt Cooper deep over the right field wall for a solo shot. In the fifth, Happ delivered an RBI single to center field -- his third knock off of Cooper -- while his two-run home run in the top of the seventh extended Myrtle Beach's lead to 6-1.
"I'm feeling comfortable at the plate," Happ told MiLb.com. "Settling into the rhythm of the season and even into the first road trip is helping a lot. I'm just trying to stick with the process and trust in what I have to do every day to be successful."
Selected by the Cubs with the No. 9 overall pick in the 2015 Draft, Happ made an immediate impact last summer after he signed, hitting .259/.356/.466 with nine home runs, 30 extra-base hits and 10 steals in 67 games between Class A Short Season Eugene and Class A South Bend.
After playing the outfield exclusively in his professional debut, including 35 starts in center field, the Cubs opted to move Happ back to second base, where he played during his amateur career at the University of Cincinnati, before the start of the 2016 season.
Happ has had his ups and downs at the position so far, evidenced by his four errors in 10 games, although that was to be expected with an aggressive assignment to the Carolina League for his first full pro campaign. Yet, while Happ's transition to the keystone remains a work-in-progress, it hasn't detracted from his hitting ability, as Monday's multi-hit performance was already his fourth of the season.
Mike Rosenbaum is a reporter for MLB.com. Follow him on Twitter at @GoldenSombrero. This story was not subject to the approval of Major League Baseball or its clubs.