Ubaldo Jimenez

Orioles starting pitcher Ubaldo Jimenez (31) watches the ball soar into the night off the bat of Boston Red Sox designated hitter David Ortiz for a two-run home run during the third inning at Oriole Park at Camden Yards. (Karl Merton Ferron, The Baltimore Sun / April 2, 2014)

Ubaldo Jimenez’s Orioles debut didn’t go poorly, but he served up two mistakes that cost him.

The 30-year-old right-hander, who was signed this offseason to the largest deal (four years, $50 million) in franchise history for a free-agent pitcher, lasted six innings.

He gave up four runs on five hits and three walks while striking out six. The problem was two of those hits were two-run homers.

David Ortiz absolutely crushed a 91-mph fastball to right in the third inning and Jimenez left another 91-mph fastball over the middle of the plate on a 0-2 count to Mike Napoli in the fifth. Napoli sent it over the wall in dead center.

Jimenez left the game trailing 4-2 after the sixth. He threw 96 pitches, 63 for strikes.

He didn’t have a clean inning, but he continually pitched out of jams -- except for the two homers.