The highest-profile series of the four conference semifinals in the MLS Cup playoffs comes to us from the No. 2 vs. No. 3 series in the Western Conference. 

Real Salt Lake and the LA Galaxy field a lineup full of stars in almost every match, and Saturday's first leg at Rio Tinto Stadium will be no different. 

The obvious spotlight will shine on Landon Donovan, Robbie Keane, Kyle Beckerman and Nick Rimando, but each of the 22 starters are deserving of high praise when at their respective bests. 

Here is a look at the six key issues that will shape Saturday's star-studded match in Utah. 

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