The contending Cubs dropped two of three in a series against Pittsburgh this week. Following the Pirates' 8-6 win on Thursday at Wrigley Field, Ross said: "That's not a good team that just took two out of three from us -- or not our caliber team, I believe."
Shelton called Ross' comment " unfortunate."
"I texted Shelton last night, like, 'Hey, just frustrated after a game,'" Ross told reporters before Saturday's game against Colorado. "I've got a ton of respect for every team we play, not just Pittsburgh. Every team can win. I thought I corrected myself within the context of talking to you guys."
Chicago went 10-3 against Pittsburgh this season, outscoring the Pirates 101-49. Ross said he was talking more about how his team had played against Pittsburgh this year.
"I think Derek and that crew over there has done a really nice job," Ross said. "Part of this job, you're not always going to be perfect in these meetings and sometimes after a game, postgame, you're going to say things that probably don't come out the right way."