The Grizzlies announced each of the four signings Monday. Terms of the deals weren’t disclosed.
Wroten, 23, has appeared in 145 career games with the Grizzlies and Philadelphia 76ers over the last four seasons. He played eight games for Philadelphia this past season.
Stephens (STEF-ens) spent this past season with the NBA Development League’s Canton Charge and Iowa Energy. He played collegiately at Memphis and was undrafted in 2013.
Selden and Williams both went undrafted this year. Selden averaged 13.8 points, 3.4 rebounds and 2.6 assists for Kansas as a junior in 2015-16. Williams averaged 13.3 points, 5.8 rebounds and 2 assists for Indiana as a junior this past season.