Diamondbacks manager Torey Lovullo said on MLB Network Radio that Marte (back) will be back in the lineup for Friday's game against the Nationals, Dani Wexelman of Cardinals.tv reports.
Marte was a late scratch Thursday versus the Cardinals due to back tightness, but he'll be back in action following a one-day absence. The switch-hitting second baseman has struggled thus far in July, slashing .229/.276/.343 across 76 plate appearances.