Henderson 8th-inning HR carries Orioles past struggling Rockies 5-4

BALTIMORE — Gunnar Henderson hit a two-run homer in the eighth inning, and the Baltimore Orioles rallied against Colorado’s struggling bullpen Friday night to pull out a 5-4 victory and lengthen their lead in the AL East.

Ryan Mountcastle and Austin Hays homered for the Orioles, who moved three games in front of Tampa Bay, which lost to the Yankees.

Baltimore’s victory was marred by an apparent injury to closer Félix Bautista, who slipped awkwardly off the mound after delivering a pitch with two outs in the ninth. Danny Coulombe finished for his second save.

Colorado arrived in Baltimore after dropping four straight games, all in which it was tied or held the lead in the eighth inning. The last three of those defeats came against the Rays, who won each game in their last at-bat.

Worse, the last-place Rockies’ bullpen came in with a 7.77 ERA in August.

The trend continued in this game. After Kyle Freeland pitched six innings and left with a 4-3 lead, Jake Bird worked a scoreless seventh.

But Brent Suter (4-3) came in for the eighth and walked Hays before Henderson sent a drive over the right-field scoreboard. The rookie skipped around first base and wore a huge smile as he headed for home.

Colorado has lost five straight when tied or leading in the eighth inning, the first time that’s happened in the big leagues since the Montreal Expos did it in 1970.

Shintaro Fujinami (6-8) worked two innings of relief for the win.

Mountcastle gave the Orioles a 1-0 lead with a homer that was anything but ordinary. His drive to right struck the top of the wall, and Mountcastle hustled to third base before coming home on a wild throw. But it turned out that his jaunt around the bases was unnecessary — it was determined that the liner hit the top of the grounds crew shed, and that’s a home run at Camden…