The reeling Rockies are a season-worst 13 games under .500. The defending NL champions, who swept Philadelphia in the NLDS last October, have been decimated by injuries this season.
Eaton needed 11 starts to get his first win. He gave up four hits and struck out four in his best outing so far, lowering his ERA to 4.99.
Rookie Greg Reynolds (0-2) allowed five hits, but was hurt by eight walks. The right-hander gave up six runs in 5 2-3 innings in his fourth career start. Reynolds was the second overall pick in the 2006 amateur draft.
After Jimmy Rollins and Shane Victorino walked to start the bottom of the fifth, Utley drove one into the second deck in right field to give the Phillies a 4-1 lead. Jenkins connected after Ryan Howard walked to make it 6-1.
Utley is on pace to hit 50 homers, 18 more than his career-high in 2006. The record for second basemen is 42 held by Rogers Hornsby (1922) and Davey Johnson (1973).
Reynolds walked three in the first, including Jenkins with the bases loaded to force in a run.
Todd Helton's RBI single off the left-field wall tied it at 1 in the third. The hit should've put the Rockies ahead, but Seth Smith hesitated before taking off from second base, held up at third and was thrown out at the plate by first baseman Howard after Helton got caught in a rundown between first and second.
Notes: The Rockies dropped Jorge De La Rosa from the starting rotation. The left-hander was scheduled to start Saturday at Chicago. De La Rosa is 1-3 with a 9.00 ERA. A replacement hasn't been named, though lefty Glendon Rusch could get the nod. ...
Victorino was 3-for-4, extending his hitting streak to 10 games.
... Victorino had two stolen bases, giving the Phillies 38 steals in 44 tries. Their 86.4 percent success rate is best in the majors.