The 5x5 seemed like something that could have happened in my team, so I checked a few players in my half of fame for their best Assists or Blocks matches...and:
(26449203)Erik-Jan Stips
(4722104)7 RB 7 AS 5 ST 5 BL 26 PTS (34 mins)
He got it not too long ago, while he's not even a regular player anymore. He played thanks to an injury of my regular SG.
Crunchy! If you eat fast enough