For the todays games , its first time for a long time that 2 games are on Friday but thats because of Leverkuse has the match relocated.
Between the match Leverkusen vs Cologne normaly Leverkusen should be winning this game at home.
About the game Mainz vs Schalke also the hometeam should be win but Schalke need the points and it can be an interesting game.
My bets are placed for a win on Leverkusen and Mainz.