I wouldn't say back to mediocrity, it's called matchup. Clement loves matching against good ball strikers like Mardy, who aren't particularly good at defense and who's movement is not stellar.
Oddly enough Andy Murray finds it hard to match against Clement as well. He's one of those pesky players that can frustrate you with his counterpunching ability and awesome speed and defense.
Do not accuse a man for no reason—
when he has done you no harm, Proverbs3:30"
So long Marat Safin, C'mon Lleyton Hewitt,Viel gluck Tommy Haas, Bring it on Marcos Baghdatis, Gut Spielen Nicolas Kiefer, Dale Fernando Gonzalez, Dale David Nalbandian, Davai Nikolay Davydenko and Allez Jo-Wilfried Tsonga