As expected, he was rusty tonight and struggled to keep up in the first period.

Some competitors, though, have simply left or are struggling to keep up.

The other players joined in or struggled to keep up.

But it's clear that the kitchen is struggling to keep up.

But recently we've been struggling to keep up with the radio station.

At one breakfast, four women who had spent the night struggled to keep up.

They've had to struggle to keep up with their new ones.

"But now the party is struggling just to keep up."

The child is running full out, her little legs struggling to keep up.

"I think the low end will be struggling to even keep up."