CINCINNATI -- Rounding the bases while his giddy teammates poured from the dugout, Adam Dunn was thinking that this shouldn't be happening.
Trudging off the field with his head down, closer Bob Wickman was thinking the same thing.
The Reds trailed 7-0 after seven innings, unable to get anything going against starter Paul Byrd. Then, one of the AL's least-dependable bullpens let another one get away.
"That was a game we probably shouldn't have won," Dunn acknowledged. "We had no business winning that game, but everybody just kept grinding and grinding."
When the Indians go to their bullpen, they tend to get ground down. Wickman (1-4) was on the mound Wednesday in St. Louis, when two Cleveland errors in the ninth helped the Cardinals rally for a 5-4 lead.
This one was much more stunning. Wickman hadn't given up a homer all season, and had never given up a grand slam in the majors.
"I had nothing tonight," Wickman said. "It was ridiculous and embarrassing. I can't throw a strike."
Eager to stop the comeback in one of the major leagues' most homer-prone ballparks, manager Eric Wedge brought Wickman into the game in a non-save situation in the ninth to hold a four-run lead. Right away, things got worse.
Javier Valentin's RBI groundout cut it to 8-5, and two two-out walks loaded the bases for Dunn.
"Wicky has a knack of working out of situations like that," said Wedge, who visited his closer on the mound to try to calm him during the rally. "He just didn't tonight."
Dunn pulled a second-pitch fastball low over the fence in right for his sixth career grand slam and his fifth game-ending homer.
"I knew I hit it good enough," Dunn said. "I didn't know if I hit it high enough."
The Reds pummeled Dunn at home plate after he delivered their third straight win -- something they hadn't done since June 6-8. The comeback also gave Cincinnati a 3-1 lead in their intrastate rivalry this season.
The Reds left the fielding thinking their luck might finally be changing at Great American Ball Park, where they're only 20-20 this season.
"We've had chances on the last couple of homestands," manager Jerry Narron said. "It seemed like we had the tying or winning runs on base every night. If you keep getting chances, somebody's going to do something."
Lately, Dunn has been the guy to do it. His tiebreaking double in the eighth inning gave the Reds a 6-5 victory over Kansas City on Thursday night. A day later, he won a game with the Reds' 47th homer in June, a club record.
"Hopefully, the momentum will carry over," he said.
Minnesota rookie Jason Kubel hit the last game-ending grand slam in the majors, ending the Twins' 5-2 victory over Boston in the 12th inning on June 13. The Yankees' Jason Giambi hit the last game-ending grand slam that provided a one-run victory -- a 13-12, 14-inning win over Minnesota on May 17, 2002.
Ken Griffey Jr. went 1-for-5 with a double, ending his streak of four straight games with a homer. The streak ended one shy of the Reds' record he shares with Ted Kluszewski and Johnny Bench.
Kent Mercker (1-1) got the victory despite giving up a run in the top of the ninth. Ronnie Belliard had a solo homer that started Cleveland's scoring in a five-run first inning, and an RBI single that completed it in the ninth.
The Indians finished a 9-17 June that left them stranded near the bottom of the AL Central and ready to deal for prospects at midseason. They traded first baseman Eduardo Perez to Seattle for a minor leaguer before Friday's game, a sign of the team's intentions.
Then, the down-and-out Indians showed why they've been a big disappointment all season. By giving up a seven-run lead, the bullpen fell to 6-14 overall, by far the worst in the American League.
- Byrd has put together two solid months, going 5-3 in his last 12 games with a 2.85 ERA.
- With Perez traded, Wedge plans to use several players at first base, including catcher Victor Martinez. "Right now, he's still our catcher," Wedge said. "I want to be clear on that. First base is an option for him."
- Todd Hollandsworth's homer off Esteban Yan was the 40th allowed by Cincinnati's bullpen, the most in the majors.
- Indians OF Grady Sizemore extended his hitting streak to 11 games.
- It was Castro's second career pinch-hit homer. The other was on May 5, 2004, against Milwaukee.
- Reds 2B Brandon Phillips matched his career high with four hits.