ST. PETERSBURG, Fla. -- The Rangers are considering the callups of top hitting prospects Ronald Guzman and recently-acquired outfielder Willie Calhoun when rosters can expand Sept. 1, but the biggest question is if there will be legitimate playing time for them.

If the Rangers decide they aren't in serious contention for a wild-card spot, they could potentially move away from playing Mike Napoli at first base. In that scenario, they might move Joey Gallo to first and give Drew Robinson and Delino DeShields more time in the outfield. Or they could move Gallo to first and play Calhoun.

For Calhoun, there is also a roster issue. He's not on the 40-man roster and doesn't have to be protected until after the 2018 season. While he's got a real shot to play in the majors next year, the Rangers could use the extra roster spot this winter. To draw the insurance payment on Prince Fielder, they will have to activate Fielder from the 60-day disabled list and place him on the 40-man roster, essentially leaving them with only 39 available spots.

General manager Jon Daniels did not comment on possible call-ups. Other possibilities for call-ups include the just-optioned Ryan Rua, infielder Jurickson Profar and outfielder Jared Hoying. Jake Diekman is expected to be activated from the disabled list. At some point, the Rangers are hopeful relievers Keone Kela and Matt Bush could be activated, too.

Relief efforts increased: The Rangers' continuing efforts to assist victims of Hurricane Harvey will push the team's financial commitment above $1 million with some new initiatives announced for this weekend's series with the Los Angeles Angels.

The Rangers announced the $1 million commitment Tuesday, based on large donations from ownership. On Tuesday, they announced a portion of ticket, merchandise and concession sales from the series will also be donated. The Rangers will donate 10 percent of all those revenues to the continuing relief effort. The recipient will be the Greater Houston Community Foundation.

Also, as previously announced, the Texas Rangers Foundation will donate proceeds from its 50/50 raffle to the American Red Cross.

The club will also accept donations of items such as bottled water, diapers, new blankets and toiletries at the ballpark during the three games.

Briefly: Diekman apparently cleared the final hurdle in his rehab from colitis surgery with a scoreless inning Tuesday night for Double-A Frisco. Diekman, who has missed the whole season, allowed a hit and struck out two while pitching on the second consecutive day Diekman has allowed one run in 61/3 innings in six rehab outings. He is expected to be activated from the disabled list Friday when rosters can be expanded to 40. ... While LHP Martin Perez's slight delivery change has helped him increase his pace and mechanics, the most tangible reason for his five-game winning streak is a huge jump in first-pitch strikes. Perez threw first-pitch strikes to 20 of 30 hitters Tuesday and has averaged 66 percent over his last five starts. He averaged 52 percent over the five previous starts.

Twitter: @Evan_P_Grant

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