"It was a tough afternoon with plenty of good stuff in there but then I made a few mistakes in the tricky conditions.
"They were very tricky conditions," Djokovic said.
"It was tricky conditions for everyone.
"They were incredibly tricky conditions," Murray said.
Barker, commenting on the tricky conditions, said: "We just didn't manage the downwind legs.
The tricky conditions have helped me but it was not luck we came out on top today, we chose correctly.
Without the arrival, Aviva's figures for 2015 would have been fair to middling in tricky conditions for all financial companies.
"I felt I was the more aggressive player today in tricky conditions," Keothavong told her new website (AnneKeothavong.co.uk).
The most tricky conditions are when the rain is beginning or ending and the track is becoming wet or drying.
2.13am BST ANDY MURRAY SPEAKS "It was incredibly tricky conditions and after the third and fourth sets it was tough mentally for me.
"It's been a good start, tricky conditions the first couple of matches, with the heat, but beautiful conditions today, in front of a full crowd.
