I didn't find anything for this season, but Evan Fournier had 0 days of rest on the road against the Cavaliers on May 12.

fournier back to back away
Interpreted as:
fournier regular-season back to back away this season
5/12/2021Fournier12/27/2020Fournier00
NAMEDATETMOPPDRMINPTSREBASTSTLBLKTOVFGMFGAFG%3PM3PA3P%FTMFTAFT%PF+/-
Evan FournierEvan Fournier5/12/2021BOSBOS@CLECLE034154121162030.03933.3002-10
Evan FournierEvan Fournier12/27/2020ORLORL@WASWAS028191200141040.02540.091090.02-15