Mike Cameron homered and drove in two runs as the Florida Marlins completed a four-game sweep of the visiting Houston Astros with a 5-4 victory on Sunday.

Cameron's first homer since May 29 helped make a winner of Chris Volstad and extended Florida's winning streak to five games.

Volstad (5-8) allowed three runs on seven hits in six innings. He struck out six and walked one as the Marlins swept a four-game series for the first-time since May 2010.

Leo Nunez pitched a perfect ninth for his 25th save.

Gaby Sanchez also had two RBIs and Emilio Bonifacio went 3-for-3 to extend his hitting streak to 12 games.

Hunter Pence homered and Brett Wallace had a two-run double for Houston, which lost for the ninth time in 10 games to enter the All-Star break with a major league-worst 30-62 record.

Lefthander Wandy Rodriguez (6-6) lasted 5 1/3 innings, giving up five earned runs on five hits and five walks to take his second straight loss.