Sendejo was activated from the reserve/COVID-19 list Tuesday, Aaron Wilson of Sportstalk 790 Houston reports.
The Colts placed Sendejo (concussion/undisclosed) on the reserve/COVID-19 list Thursday.
Sendejo (concussion) has been ruled out for Sunday's game against the Raiders.
Sendejo (concussion) has been ruled out for Saturday's game in Arizona, Kevin Bowen of 1075 The Fan Radio reports.
Sendejo was placed in concussion protocol Sunday, Joel A. Erickson of The Indianapolis Star reports.
Sendejo (calf) is active for Sunday's game against Houston.
Sendejo recorded seven tackles (six solo) in a the Colts' 23-17 win over the Jaguars on Sunday.
Sendejo (concussion) is not listed on the injury report ahead of Sunday's matchup with the 49ers.
Sendejo (concussion) won't play in Sunday's contest against the Texans, JJ Stankevitz of the Colts' official website reports.
Sendejo suffered a concussion in Monday's loss to Baltimore, head coach Frank Reich told Kevin Bowen of 107.5 The Fan Indianapolis.