Reed could have a hard time cracking San Antonio's Opening Night rotation.
Williams signed a deal with the Wizards on Friday, according to NBA reporter Chris Haynes.
Jones Garcia (ankle) agreed to a two-way contract with the Spurs on Wednesday, per Michael Scotto of HoopsHype.com.
Lee recorded nine points (3-6 FG, 3-5 3Pt), seven rebounds, two assists, two steals and one block across 26 minutes in Saturday's 86-81 Las Vegas Summer League win over the Suns.
Kelly (groin) provided 20 points (6-12 FG, 1-5 3Pt, 7-7 FT), one rebound and one assist across 20 minutes during Saturday's 86-81 Las Vegas Summer League win over the Suns.
Reed (rest) won't play in Saturday's Summer League game against the Suns, Paul Garcia of ProjectSpurs.com reports.
Okpara posted 12 points (6-13 FG, 0-1 3Pt), eight rebounds, two assists and one block across 27 minutes in Saturday's 91-83 Summer League win over the Hawks.
Beekman registered 13 points (5-10 FG, 1-3 3Pt, 1-1 FT), six rebounds, 14 assists and one steal over 31 minutes in Saturday's 91-83 Las Vegas Summer League win over the Hawks.
Watkins (knee) didn't play in Saturday's 91-83 Summer League win over the Hawks.
Livingston logged 20 points (8-15 FG, 2-5 3Pt, 2-3 FT), nine rebounds and four assists over 31 minutes in Wednesday's 108-94 Summer League loss to the Clippers.
