CINCINNATI - Jason Bay probably wishes this month can last a while longer.

Bay hit his seventh homer in June and drove in four runs, one in Pittsburgh's eight-run ninth inning, and Josh Fogg allowed two runs in six innings to help the Pirates send the Cincinnati Reds to a rare home series loss with a 14-4 rout Sunday.

''I was struggling more than I was used to,'' Bay said. ''Every time I'd get in a groove, I'd take a step back. When I came back, I tried to do too much at once.''

Bay wasn't activated until May 7 after undergoing shoulder surgery in November.

''The rust is starting to come off,'' manager Lloyd McClendon said. ''He's getting used to the speed of the game at this level.''

Fogg (5-6) improved to 4-1 in his career against the Reds, who lost just their third of 11 home series this season.

''They're a free-swinging team,'' Fogg said of his success against Cincinnati. ''If you can keep the ball below the knees and get a lot of ground balls, you have a chance.''

He allowed three hits as the Pirates bounced back from blowing a 4-0 seventh-inning lead in a 6-4 loss on Friday to win back-to-back road games for the first time since winning a fifth in a row May 26.

''These guys never cease to amaze me,'' McClendon said. ''When you lose a game like we did on Friday, a lot of teams would fold, but they didn't do that.''

Ken Griffey Jr. went 0-for-4 to fall to 1-for-27 since hitting his 500th career home run last Sunday at St. Louis. He's hitless in his last 24 at-bats, surpassing the previous career high of 21 he set in 1993.

Adam Dunn homered twice for the Reds, whose 22-12 record at home is still the best in the National League despite the loss.

Paul Wilson (7-2) lost his second consecutive start since opening the season with seven wins. Wilson, who hasn't won since May 25 and has been the victim of three blown saves in that span, allowed four runs on five hits and a season-high six walks.

''I knew it wasn't going to be peaches and cream all season, but character is made when bad things happen,'' Wilson said. ''I didn't do my job. I was trying to throw strikes and get ahead in the count. I was trying to pitch to contact, and I didn't do the job.''

With the Pirates trailing 1-0, Bay followed Jason Kendall's third-inning leadoff walk and Craig Wilson's two-out single with an opposite-field shot into the right-field bleachers on a full count for his ninth homer of the season.

It was Bay's second three-run homer of the series. He finished 3-for-4 with four RBIs.

After Bay's homer gave Pittsburgh a 3-1 lead, Cincinnati's Juan Castro led off the third with a double off the right-field wall, moved to third on Wilson's groundout and scored on D'Angelo Jimenez's sacrifice fly.

The Pirates regained their two-run lead in the sixth when Paul Wilson walked the bases loaded, including one intentionally to Bobby Hill with two outs to get to Fogg, who lined a single to center.

After the Reds again cut the deficit to one on Wily Mo Pena's pinch-hit infield single in the seventh, the Pirates broke the game open with a two-run eighth on Kendall's sacrifice fly and Jack Wilson's RBI double off the left-field wall.

Dunn hit his 21st homer in the second, as the ball caromed off the base of the right-field foul pole and into the Pirates bullpen. He connected for his second homer of the game to lead off the ninth off Ryan Vogelsong.