PHOENIX - The Nationals will try to end their six-game road trip on a winning note. Ian Desmond will be batting cleanup while Nate McLouth will hit eighth and play left field in the series finale against the Diamondbacks. Doug Fister will make his second start of the season. For the Nationals: CF Denard Span 3B Anthony Rendon RF Jayson Werth SS Ian Desmond 2B Danny Espinosa 1B Tyler Moore C Jose Lobaton LF Nate McLouth RHP Doug Fister