Crockett surrendered an unearned run in the first then allowed just three batters to reach base the rest of the way.
Harvard got an early 2-0 lead off Columbia loser Mike Orr (0-4), who gave up 13 hits and nine earned runs in a complete game of slightly worse pedigree.
Carey scored the game's first run in the first inning when junior designated hitter Jason Larocque grounded into a 5-3 double play with the bases loaded.
Portman drove in Woodfork with a one-out single in the second then delivered the big blow with a two-run home run in the top of the fourth that made it 4-1. Portman was 0-for-7 in Friday's doubleheader.
Carey, Mager and Huling all hit consecutive RBI singles in a three-run sixth as the Crimson piled on the luckless Orr.
It was otherwise a rough weekend for Carey, who was a Second Team All-Ivy selection last year and batted .374 but was just 4-for-17 on the weekend. He is currently hitting .224.
"It's been frustrating for most of the season," Carey said. I feel like I hit the ball well today, but I've really got nothing to show for it."
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