Andy Murray will continue to balance his need for grass-court matches with concern over his injured ankle when he takes on Janko Tipsarevic at the Aegon Championships on Thursday.
The Briton, seeded second, will play 14th seed Tipsarevic in the second match on Centre Court at Queen's Club from around 1400 BST.
And despite coming through a tough three-set battle against Xavier Malisse on Wednesday without any alarms, the ankle Murray injured at the French Open remains an issue.
He has been wearing a brace on his right ankle, in addition to the one he always wears on his left, and has been reassured by doctors that playing will not worsen the injury - a partial tear to a tendon - although it might slow the recovery process.
"It's been quite a stressful few days to decide [whether to play], because I was desperate to play here but also didn't want to end up messing up for Wimbledon, so it's just been difficult," said Murray.
"Everyone's given me a lot of good advice but it obviously comes down to my decision in the end."
Another tight match seems likely on Thursday as Murray and Tipsarevic battle for a place in the quarter-finals.
Murray has a 3-3 record against the Serbian, having lost their first ever meeting on the same Queen's Club Centre Court five years ago, as well as their most recent encounter in Dubai last year.
"He's a very good player, I lost to him here a few years ago," said the 24-year-old Scot. "He's a good grass-court player, tricky opponent. I have to play better than my first round if I want to win that one."
And Murray will have to contend again with playing conditions that surprised him against Malisse.
"I don't mind a slow grass court but it's just so slow, the slowest I've seen it," he said. "The conditions probably had something to do with it and also Paris was playing much faster than usual this year."
World number one Rafael Nadal will be back in action against Radek Stepanek in the third match match on Centre, with Juan Martin del Potro up against Adrian Mannarino or Gilles Simon in the third match on Court One.
And Thursday sees the return to action of British number two, James Ward, who takes on American defending champion Sam Querrey after enjoying the best win of his career against fourth seed Stanislas Wawrinka on Tuesday.
"Sam won it last year so he's obviously a top player," said Ward, who follows Murray and Nadal on to Centre Court. "If I play like I did on Tuesday and serve well, then I give myself a chance."
Four-time winner Andy Roddick opens play on Centre Court against South African Kevin Anderson at 1230 BST.