49ers QB Jimmy Garoppolo (thumb) uncertain for next week

San Francisco 49ers quarterback Jimmy Garoppolo sat out Monday's practice with an injured thumb on his throwing hand, putting his availability for Sunday's game against the Houston Texans in doubt.

Coach Kyle Shanahan told reporters Monday afternoon that Garoppolo was affected by the injury during last Thursday's 20-17 loss to the Tennessee Titans, and the team would re-evaluate him Wednesday.

Shanahan called it a sprai