Monday’s games

Reds 7, Astros 5: Ken Griffey Jr. hit his 491st homer, and Austin Kearns had a tiebreaking, three-run shot in the eighth, powering Cincinnati to a rare four-game sweep of visiting Houston. Griffey hit his second homer in two games, and also had a two-run double off Tim Redding that smacked off the left-field wall, a few feet short of another homer. Cincinnati has won six in a row to grab sole possession of first place for the first time since April 15. The Reds have won nine of 10 overall. Sean Casey also homered for the second straight game and had two hits, raising the N.L.’s top batting average to .385. John Riedling (3-0) got the win despite giving up Lance Berkman’s tying, two-run homer in the seventh.

Braves 5, Expos 0: Andruw Jones homered twice and John Thomson pitched Atlanta past punchless Montreal. J.D. Drew also connected for visiting Atlanta, which has won four of five following a three-game losing streak to move within one game of .500. The Expos, an N.L.-worst 14-30, have been shut out eight times in 44 games.

Marlins 13, Diamondbacks 5: In Miami, Juan Pierre drove in four runs and Ramon Castro broke out of a season-long slump with three RBIs as Florida beat Arizona. The victory was Jack McKeon’s 100th as Marlins manager and it pulled Florida into a tie with Philadelphia atop the N.L. East. Brandon Webb (2-4) allowed seven runs and seven hits in 5 1/3 innings.