LAKE BUENA VISTA, Fla. -- Justin Upton's two home runs helped the Braves overcome Kris Medlen's shaky start and claim a 17-10 win over the Phillies in a slugfest at Champion Stadium on Monday afternoon.

Upton began his first three-hit game of the spring season with a towering two-run home run that highlighted Atlanta's six-run first inning against Rodrigo Lopez. He added a three-run home run off Colton Murray with two outs in the third inning.

"They were in the home run trot today," Phillies manager Charlie Manuel said. "Do we play them anymore before the season starts? Friday? That's good. Maybe they can home run us to death and they won't hit any during the season."

Juan Francisco had a two-run single off Lopez in the first inning and hit an opposite-field home run off Michael Stutes in the fourth. While hitting three of his five home runs in his past four games, Francisco has strengthened his battle against Chris Johnson to begin the season as Atlanta's starting third baseman.

After Lopez surrendered seven hits and six runs in the first inning, Medlen allowed the Phillies to score five runs on seven hits in the second inning. Darin Ruf's RBI double was the only extra-base hit recorded during the inning. Yuniesky Betancourt, Humberto Quintero and Ben Revere each produced a single that drove in a run.

Dominic Brown notched a single in the second inning and then added to Medlen's woes with a two-run home run in Philadelphia's four-run fifth inning. It was Brown's fifth homer of the spring.

Medlen surrendered 14 hits and nine earned runs while throwing 84 pitches in five innings. The Braves right-hander had allowed just four runs in the 13 2/3 spring innings he had previously completed.

Freddie Freeman aided the Braves' 19-hit attack with a two-run home run in the second inning. Betancourt, Quintero, Revere, Brown and Ryan Howard each recorded multi-hit performances for the Phillies, who tallied 17 hits in the loss.

Up next: The Phillies return to Clearwater to play host to the Yankees at 1:05 p.m. ET on Tuesday at Bright House Field. The game can be watched live on MLB.TV. Right-hander Kyle Kendrick is scheduled to start. Relievers also scheduled to pitch are closer Jonathan Papelbon, Mike Adams, Chad Durbin and Raul Valdes, although Papelbon has been sick the last few days, so his status is unclear.