Auburn Hills — The Pistons announced the signing of four players to their training camp roster, including former No. 2 pick Hasheem Thabeet, as camp begins next week.

In addition to Thabeet, a 7-foot-3 center who was drafted second in 2009, they signed Brian Cook Lorenzo Brown and Josh Bostic. All are on non-guaranteed deals, and the Pistons have a full roster as is.

Thabeet is trying to work himself back into the league and hopes to use camp as a way to impress other teams.

He spent last season with Oklahoma City. Thabeet also played in Houston, Portland and Memphis — the franchise that drafted him behind Blake Griffin and one pick ahead of James Harden

Cook was with the summer league team in Orlando and previously played for Pistons president and coach Stan Van Gundy with the Magic for parts of two seasons (2007-09). Cook, 33, has played nine NBA seasons, last being with the Washington Wizards in 2012.

Brown is a 6-foot-5 shooting guard who was a late second-round pick in 2013 with the Timberwolves, and spent time in the D-League last season. Bostic has no NBA experience, and was previously the 2008-09 Division II player of the year for Findlay University.