The unseeded duo had not dropped a set in their opening two matches in Hamburg, but trailed their opponents 3-6, 3-5 on Centre Court. After saving match point on a deuce deciding point at 4-5, the pair completed a run of four straight games to force a Match Tie-break.
Peers and Venus saved five of seven break points to improve to 13-6 as a team. The Dubai champions joined forces for the first time at the ASB Classic in January.
Peers will be aiming to capture his third Hamburg crown in Sunday’s championship match. The Australian lifted the trophy in 2015 (w/J. Murray) and 2016 (w/Kontinen).