消息来源：https://twitter.com/ShamsCharania/status/1441388888854089729
Free agent guard Garrison Mathews is signing a one-year,
non-guaranteed deal with the Boston Celtics,
sources tell @TheAthletic @Stadium.
Mathews spent his first two NBA seasons with Wizards and
played 64 games (24 starts) in 2020-21.
6'5" 的SG　Garrison Mathews 和赛尔提克签下一年的非保证约，
Mathews 是2019年的落选新秀，过去两季有待过巫师，第一年是双向合约
19-20 : 5.4分 1.3板 0.6助 1.1三分 ( FG% 42.9%, 3P% 41.3%, FT% 91.2% )
20-21 : 5.5分 1.4板 0.4助 1.2三分 ( FG% 40.9%, 3P% 38.4%, FT% 88.4% )