Chelsea head coach Liam Rosenior has defended his heavy squad rotation after his side edged past 10u2011man Wrexham to reach the FA Cup quarteru2011finals.
The 41u2011yearu2011old made nine changes from their 4u20111 win at Aston Villa but needed extrau2011time goals from Alejandro Garnacho and Joao Pedro, after Wrexham lost momentum following George Dobson's red card at the end of normal time.
Rosenior has averaged five changes per match, is yet to field the same back four in consecutive games and has also begun rotating his goalkeepers, Rob Sanchez and Filip Jorgensen.