E. Mertens comes into this match in difficult form — 2 wins from the last 5. Point margins have been modest — DS averaging +6.6. Wins have been functional rather than dominant. The serve has been a concern — averaging only 5.9/10, leaving E. Mertens vulnerable on second serve and facing frequent return pressure.

J. Pegula arrives in exceptional form — five wins from five, all against top-40 opposition. The serve has been a concern — averaging only 6.1/10, leaving J. Pegula vulnerable on second serve and facing frequent return pressure.