49ers trade for Texans defensive tackle Khalil Davis, re-sign safety Tashaun Gipson

SANTA CLARA – The 49ers kept alive an annual ritual of adding a veteran player, beating Tuesday’s NFL trade deadline to acquire defensive tackle Khalil Davis from the Houston Texans, a league source confirmed.

Two hours later, the 49ers further addressed their defensive depth by re-signing safety Tashaun Gipson to the practice squad, a source confirmed.

Otherwise, the 49ers’ latest playoff push will revolve around their own reinforcements, and they may tout the NFL’s biggest midseason upgrade.