QPR aren’t huge corner winners, but the line for them to win four or more is a good price for a fairly modest line.
Their average for the season at Loftus Road is winning 5.94 corners per match, which is obviously a good chunk above the requested line here. Recent matches at Loftus Road have seen QPR win the following numbers of corners: 7 (most recent vs Sheffield United), 8, 5, 7, 5, 7, 2, 6, 4, 9, 12. This means that QPR have easily hit this target in 10 of their last 11 home matches.
Obviously, Boro do present a more difficult challenge than the average Championship team. However, Middlesbrough did concede six corners to Birmingham in their last away match, and though Coventry only won three, Sheff Utd won eight, Stoke got five, West Brom four, and Derby four, in the previous five away matches that Boro have played.