PHILADELPHIA -- Chase Utley was the one being mobbed at home plate Thursday night at Citizens Bank Park.

The second baseman clubbed a two-run, walk-off homer in the bottom of the 14th inning to give the Philadelphia Phillies a 5-3 win over the Miami Marlins.

However, a shining subplot lost in Utley's heroics was the continued dominance of the Phillies' bullpen.

Six Philadelphia relievers combined for seven scoreless innings to set up Utley's game-winner.

"The bullpen was great, seven scoreless innings, three hits," Phillies manager Ryne Sandberg said. "They really kept the game in check and gave us a chance for Chase's big swing at the end. ...

"They're on a roll as a group. They've found their niche and they're comfortable with it. I think they're just feeding off each other down there, a little competition from within."

After a disastrous start to the season, Philadelphia's bullpen has the majors' best ERA since June 3 (1.10).

Mario Hollands and Justin De Fratus haven't allowed a run in 16-plus consecutive innings, while Antonio Bastardo has been lights-out in June (13 strikeouts, no walks, 0.00 ERA) and closer Jonathan Papelbon has pitched superbly all season (1.44 ERA, 18 saves).

Not to mention, Jake Diekman and Ken Giles hit 100 mph plus on the stadium radar gun in Thursday's walk-off victory.

"The bullpen has been great for a while," Utley said. "For them to keep us within striking distance was huge."