PHOENIX -- D-backs manager Kirk Gibson said that some mechanical issues have contributed to reliever Heath Bell's struggles recently.
"He tends to fly open a little bit, and he doesn't hide the ball as well," Gibson said. "He's unable to locate the ball with as much deception, which makes him much more hittable."
Over his last six appearances, Bell has a 17.36 ERA and has been on the receiving end of some boos from the crowd at Chase Field.
"I think he's done better than people give him credit for," Gibson said. "I think it's sad that people boo him. He's won five games for us. He's saved 15 games for us."
Gibson appeared to blame the media for the fact that Bell has been booed.
"I know why they boo him, because a lot's been written about him and talked about him," Gibson said. "Believe me, he wants to do better, we want him to do better, but let's not discount what he has done. I don't think that's right."
Hill faces former team for first time since trade
PHOENIX -- For the first time in his professional career, Aaron Hill found himself playing against the Blue Jays.
Hill was drafted by the Blue Jays in 2003 and played in the big leagues there from 2005 until being traded to the D-backs in August 2011.
"There are still some guys that I developed great relationships with while I was there," Hill said. "I'm looking forward to see them, but we still have to focus on winning some ballgames here as we try and make a late push. You wish them luck throughout the season, until you're playing them."
Hill struggled with the Jays in 2010 and 2011, but his offense has been outstanding since he joined Arizona, winning a National League Silver Slugger Award last year.
"He was a really good player in Toronto for a number of years," Blue Jays manager John Gibbons said. "But sometimes you need a new look; that's not uncommon in baseball. Bottom line, though, is he's been a good player his whole career. He's very talented, and I know they love him over here."
Hill spent time talking with Blue Jays players and coaches during batting practice. He was not in the lineup Monday, getting a rare day off.
"That was the only organization that I knew, and they treated me and my family wonderfully," Hill said. "It's a great city, big city, had a lot of great times there. A lot of great memories."
D-backs add Langwell as part of Kubel deal
PHOENIX -- The D-backs added Matt Langwell to the roster Monday, one day after receiving him as the player to be named in the deal that sent outfielder Jason Kubel to Cleveland.
Langwell, 27, was 3-4 with two saves and a 2.24 ERA for Triple-A Columbus at the time of the deal. He appeared in five games with the Indians this year, going 1-0 with a 5.06 ERA.
"I was in Columbus yesterday afternoon and found out that I'd been traded over," Langwell said.
The D-backs dealt Kubel to Cleveland last Tuesday, but Langwell did not realize he was the player to be named at that time.
"I wasn't sure," Langwell said. "I had been told at that point [by the Indians] that I wasn't going to be going up in September, so at that point I was kind of hoping to maybe get somewhere and get a fresh start and try to help a team in September."
Langwell found a familiar face in Arizona left-hander Tony Sipp, who played with Langwell in the Cleveland organization.
"I pretty much know he's a control-guy fastball, keeps it down in the zone," D-backs manager Kirk Gibson said. "When he's here, we'll take a look."
Steve Gilbert is a reporter for MLB.com. Read his blog, Inside the D-backs, and follow him on Twitter @SteveGilbertMLB. This story was not subject to the approval of Major League Baseball or its clubs.