The Hawks waived Silva on Wednesday, Kevin Chouinard of Hawks.com reports.
The Mavericks waived Silva on Tuesday.
Silva signed a second 10-day contract with the Mavericks on Friday, NBA writer Marc Stein reports.
Silva's 10-day contract with the Mavericks expired on Friday, Keith Smith of Spotrac.com reports.
Silva agreed Monday with the Mavericks on a 10-day contract, Michael Scotto of USA Today reports.
Silva produced 29 points (10-12 FG, 5-5 FT), three rebounds, three blocks and two assists in 21 minutes during Thursday's 133-111 win over Windy City.
Silva totaled 15 points (6-8 FG, 2-4 FT), nine rebounds, two assists, one steal and one block in 20 minutes during Monday's 111-104 loss to Capital City.
Silva recorded 13 points (5-10 FG, 2-2 FT), 13 rebounds, five assists, one steal and one block in 27 minutes during Monday's 131-116 loss to Lakeland.
Silva managed 17 points (7-8 FG, 2-2 FT), nine rebounds, five assists and three blocks in 25 minutes during Friday's 134-116 win over Raptors 905.
Silva totaled 24 points (9-15 FG, 4-5 FT), 11 rebounds, two blocks and one assist in 26 minutes during Monday's 127-119 win over Delaware.