- Frankfurt see off Chinese opposition in Abu Dhabi.
- Hrgota comes off bench at half-time to grab two goals.
- Seferovic gives Bundesliga side first-half lead.
Up against a side 12th in their domestic league, Niko Kovac's Bundesliga outfit largely had things their own way after Haris Seferovic opened the scoring just 11 minutes in.
The Switzerland international striker passed up an opportunity for a second shortly afterwards while Alex Meier sent two headers wide before the break from crosses from Bastian Oczipka and 16-year-old debutant Sahverdi Cetin.
Hrgota was one of seven new faces Kovac introduced at the break, and the Sweden international forward took his chance. He finished crisply on 67 minutes, and was then in the right place at the right time to touch the ball into the empty net after Ante Rebic had burst forward and rounded the goalkeeper ten minutes later.
Watch: Hrgota nets a Bundesliga brace on Matchday 16 to help sink local rivals Mainz:
"This game fulfilled its objective," said Kovac. "In the second half, we did a lot of things well. The ball did the running, there was some spark in our play. We created a lot of chances. Overall, we can be happy."
The Frankfurt boss, whose side lie fourth after the Hinrunde, just a point outside the top three, also had good news from the treatment room.
Tests showed January signing Anderson Ordonez did not do serious damage to right knee ligaments, though he may still miss next Saturday's friendly against Russian giants Zenit St. Petersburg.