Christian Pulisic won’t play for the U.S. in two friendlies vs. Columbia and Peru this month. (FrontRowSoccer.com Photo)

CHICAGO – U.S. men’s national team midfielders Tyler Adams and Christian Pulisic have been forced to withdraw from the upcoming Kickoff Series matches again Colombia and Peru due to injury, it was announced Friday afternoon.

Adams, who plays for the Red Bulls, has been suffering from back spasms, while Pulisic is sidelined with a torn calf muscle.

Philadelphia Union winger Fafa Picault has been added to the roster, with 23 players set to report to Tampa this weekend. The 27-year-old has earned one cap for the USMNT, entering as a substitute in the 3-1 win over Puerto Rico in Bayamon May 22, 2016.

More than 25,000 tickets have been sold for the next stop of the Kickoff Series when the United States will host 14th-ranked Colombia at Raymond James Stadium in Tampa Oct. 11 (FS1, UniMas and UDN will broadcast the match beginning at 7:30 p.m. ET)

The final home match pits the squad against 21st-ranked Peru on Oct. 16 at Pratt & Whitney Stadium at Rentschler Field in East Hartford, Conn. Oct. 16 (ESPN2, UniMas and UDN will broadcast live beginning at 7:30 p.m. ET.)

U.S. roster (Club; caps/goals)

GOALKEEPERS (3) : Brad Guzan (Atlanta United FC; 58/0), Ethan Horvath (Club Brugge/BEL; 2/0), Zack Steffen (Columbus Crew SC; 5/0)

DEFENDERS (8) : John Brooks (Wolfsburg/GER; 34/3), Reggie Cannon (FC Dallas; 0/0), Cameron Carter-Vickers (Swansea City/WAL; 5/0), Aaron Long (New York Red Bulls; 0/0), Matt Miazga (Nantes/FRA; 9/1),Antonee Robinson (Wigan Athletic/ENG; 4/0), Ben Sweat (New York City FC; 0/0), DeAndre Yedlin (Newcastle United/ENG; 54/0)

MIDFIELDERS (9) : Kellyn Acosta (Colorado Rapids; 19/1), Jonathan Amon (Nordsjælland/DEN; 0/0), Michael Bradley (Toronto FC/CAN; 140/17), Julian Green (Greuther Fürth/GER; 12/4), Weston McKennie (Schalke/GER; 6/1), Fafa Picault (Philadelphia Union; 1/0), Kenny Saief (Anderlecht/BEL; 2/0), Wil Trapp (Columbus Crew SC; 8/0), Tim Weah (Paris Saint-Germain; 5/1)

FORWARDS (3) : Andrija Novakovich (Fortuna Sittard/NED; 2/0), Josh Sargent (Werder Bremen/GER; 3/1), Bobby Wood (Hannover 96/GER; 41/12)