Old Faithful Philipp Kohlschreiber got comfortable in a familiar setting on Monday, with the German advancing as he played the Hamburg Open for the 17th time in the last 20 editions.
The 37-year-old ranked 117 defeated Spaniard Jaume Munar7-6(5), 6-4 in just over two hours at the event where he reached semi-finals on the local clay in 2014 and 2017.
The No. 66 Spaniard, 13 years younger than the veteran winner, owns a dozen Challenger titles on the dirt.
On a lightly scheduled opening day at the Rothenbaum club, Brazilian qualifier Thiago Seyboth Wild, winner of the Santiago title in 2020, defeated wild card Nicola Kuhn of Spain 1-6, 6-1, 6-2.
The No. 127 winner produced his first ATP win of 2021 as he awaits a second-round opponent from German seventh-seed Jan-Lennard Struff or Serb Laslo Djere.
Argentine Sebastian Baez, a qualifying lucky loser, beat Frenchman Corentin 6-1, 6-2, taking 63 minutes and next faces a challenge in the form of two-time tournament champion Nikoloz Basilashvili.
The Georgian lifted the trophy in 2018 and 2019; he owns Doha and Munich titles this season.