Southampton average 12 corners per game in their last 5 games, and I'm not convinced their defence is sorted despite clean sheet vs Stoke, however they haven't lost their scoring touch, averaging 2 goals per game in their last 5 home games. Rotherham's away form is horrid, too.
Southampton also have the worst discipline in the division (31Y and 1R).
Crawley and Wrexham should be good regardless; Crawley scored 20 in their 11 league games, and 14 of those in their last 5 home games. 42 corners in their last 5 (Avg 8+), while Wrexham average just under 10 per game. And Wrexham are 4th highest goalscorers in the league, even though last game was a 0-0 draw.