BRADENTON, Fla. — A.J. Burnett lasted just 1 1-3 innings Monday against the Philadelphia Phillies, struggling with his control as his pitch count climbed to 51.

The Pittsburgh Pirates ace, preparing for an opening-day start against the Chicago Cubs, walked in a pair of runs in a four-run second during a 5-0 loss, giving up four runs, four hits and the two walks.

“All I’m worried about is April 1 and building up to that date,” Burnett said.

Burnett issued consecutive walks to Humberto Quintero and Ben Revere that forced in two runs. Later in the inning, Chase Utley worked reliever Kris Johnson for another bases-loaded walk.

“Walking guys with the bases loaded at this point in the spring doesn’t bother me because I was trying to be aggressive in that situation,” Burnett said. “Any time you take the mound you want to do well, but it’s spring training and results really don’t matter. The whole idea is to just to get your work in and keep building up arm strength for the regular season.”

Phillies fifth starter John Lannan and four relievers combined on a one-hitter. Lannan gave up the Pirates’ only hit, a two-out double by Travis Snider in the first, and walked two during three scoreless innings.

Lannan has allowed one run in five innings in his first two starts. He signed a $5 million, one-year deal with Philadelphia after Washington allowed him to go free.

Mike Adams, signed to a $12 million, two-year contract, followed Lannan and pitched one perfect inning with one strikeout..

“Our pitching looked real sharp,” Philadelphia manager Charlie Manuel said. “Lannan looked really good. He has a lot of motion in his delivery and it’s tough for the hitters to pick up his pitches.”

Left-hander Wandy Rodriguez, the Pirates’ No. 2 starter, pitched three scoreless innings. He then departed for San Juan to join the Dominican Republic for the World Baseball Classic.

Former Tampa Bay Buccaneers and Indianapolis Colts coach Tony Dungy gave a pregame speech to the Pirates and also spoke to players at Pittsburgh’s minor league complex.