Chelsea was trying and played most of their regulars(Ballack, Shevchenko, Essien, Terry, Cole, Robben, Geremi, Vieira all played) but MLS is in mid-season form and fitness and Chelsea is still in preseason training--second half fitness was the deciding factor IMO. Once all those new mix of players get used to playing with each other get in game shape and used they are going to be difficult to beat.
The MLS goalkeepers played very well...other players who impressed me were Jacqua, Gross and Gomez.