Garza scored a team-high 29 points (11-17 FG, 3-6 3Pt, 4-6 FT) while adding nine rebounds and an assist in 32 minutes during Thursday's 132-126 preseason loss to the Nuggets.
Garza will start in Thursday's preseason finale against the Nuggets.
Garza scored 20 points (7-13 FG, 1-4 3Pt, 5-8 Ft) while adding nine rebounds, an assist and a steal in 22 minutes off the bench during Friday's preseason win over the Lakers.
Garza and the Timberwolves agreed to a two-year deal Monday, ESPN's Adrian Wojnarowski reports.
The Timberwolves converted Garza's two-way deal to a standard contract Thursday, Shams Charania of The Athletic reports.
Garza contributed eight points (3-5 FG, 2-4 3Pt) and one rebound over 11 minutes during Monday's 114-104 win over the Jazz.
Garza racked up nine points (2-5 FG, 1-3 3Pt, 4-4 FT), three rebounds and one assist in 10 minutes during Sunday's 120-109 loss to the Lakers.
Garza (back) is listed as questionable for Friday's game versus the Rockets due to back spasms.
Garza is listed as questionable for Wednesday's game against the Pelicans with low back spasms.
The Timberwolves transferred Garza from the G League's Iowa Wolves on Saturday.