Full program on Tuesday

No fewer than 12 matches are scheduled for Tuesday at the BOSS OPEN. These include the first appearances of local heroes Justin Engel, Yannick Hanfmann and Germany's top doubles team Kevin Krawietz/Tim Puetz.

The action gets underway at 11 a.m. on all three courts on Tuesday. Canadian Denis Shapovalov and Frenchman Arthur Rinderknech will open the day on Center Court, followed by the very first grass court appearance of Germany's great young hope Justin Engel. The 17-year-old world number 281 will face Australian qualifier James Duckworth, world number 94, in his grass court debut.

Also in action: French fan favorite Gael Monfils, who will close out the day on Center Court (not before 5 p.m.) against Alex Michelsen, the American number 7 seed in the tournament.

In an all-qualifier duel, Yannick Hanfmann will face Hungary's Marton Fucsovics in the first match of the day on Colosseum Court. Kevin Krawietz/Tim Puetz will close out the second match court against Italian duo Matteo Arnaldi/Lorenzo Sonego.

Other top players making their first appearance in front of the Stuttgart crowd on Tuesday include Fabio Fognini, US youngster Learner Tien, and Taylor Fritz, who will undergo his first test on grass in doubles alongside Czech Jiri Lehecka.