Hawthorn forward duo Mitch Lewis and Nick Watson will be unavailable to play ahead of their side's Gather Round clash against Collingwood on Sunday.

Lewis (hamstring) and Watson (ankle) both suffered the injuries during the Hawks game against Geelong on Easter Monday at the MCG. 

Hawthorn Head Doctor Liam West said Watson was expected to miss a small block of football after suffering a syndesmosis injury.

"Fortunately in Nick's case, he won't require surgery on his ankle," West explained. 

“He'll spend the next period in a moonboot to allow his ligaments to heal before we begin loading him up again.

"At this stage we think he'll be out 4 to 6 weeks, but will continually reassess this during his rehab period."

Meanwhile, West said scans on Tuesday confirmed Lewis had suffered low-grade hamstring injury from Monday's game.

"Mitch won't be available this week given the six-day turnaround, but we will monitor his response to loading to determine his Round 5 availability," West said.

"Being a lower grade injury we don't expect Mitch to miss a considerable amount of game play."

Hawthorn's full injury report will be available on hawthornfc.com.au on Wednesday.