QPR will host Wednesday at Loftus Road, and former Rangers manager Holloway believes that the match will finish 1-1.
“Sheffield Wednesday are consistently performing every week and are much better than I'd thought they'd be,” the Englishman wrote on Skysports.com.
“Loftus Road is always a tough place to go in midweek under the floodlights but I'm just not sure where QPR are at the moment.”
QPR will head into this evening’s match on the back of a 2-1 defeat to Birmingham City away from home at St. Andrew’s in the Championship.
Rangers, who got relegated from the Premier League at the end of last season, are 12th in the league table at the moment with 15 points from 11 matches.
Chris Ramsey’s side are five points behind sixth-place Derby County, which means that they are very much in the running for a playoff spot.
Meanwhile, Wednesday find themselves ninth in the Championship table at the moment with 16 points from 11 matches, four points behind Derby.
The Owls have been playing well recently, but they have kept just one clean sheet in their last 10 away games
QPR are unbeaten in seven home matches against Wednesday, last losing to them at Loftus Road in October 2000.