The 21-year-old Brevis, who came into the Chennai squad mid-season as an injury replacement, struck four sixes in his knock as the men in yellow were restricted to 154 all out.
The young South African, who came in at number five, received no real support with the next best contributor Ayush Mhatre who scored 30 while Deepak Hooda made 22 late in the innings.
Brevis' innings was ended 13th over due to a brilliant catch taken on boundary by Sri Lanka international Kamindu Mendis.
Mendis then starred with the bat as he was unbeaten on 32 to guide the Sunrisers to victory with eight balls to spare after they were wobbling at 90-4.
The Super Kings remain at the foot of the IPL standings having only won two of their nine matches so far this season while the Sunrisers have one more win and are two points better off.
Sunrisers Hyderabad surged to the top of the IPL table with a commanding 33-run victory over Punjab Kings in a high-scoring contest at the Rajiv Gandhi International Stadium, where Heinrich Klaasen once again proved the difference with the bat.
Ryan Rickelton admits it has been "tricky" being in competition with Proteas teammate Quinton de Kock for the opening berth in the Mumbai Indians line-up this IPL season.
Sanju Samson struck and brisk, unbeaten 87 to help Chennai Super Kings beat Delhi Capitals by eight wickets to record their fifth victory of the 2026 IPL season.
Ryan Rickelton and Rohit Sharma produced a stunning opening stand to steer Mumbai Indians to a commanding six-wicket win over Lucknow Super Giants on Monday, keeping their faint IPL playoff hopes alive with a record chase at the Wankhede Stadium.
