Tim English during the 2022 AFL Round 1 match between Melbourne and Western Bulldogs (Photo by Cameron Grimes / Zero Digital Media)

Western Bulldogs big man Tim English has reportedly suffered another hamstring injury, with the ruckman's injury seeing his training opportunities hindered a month out from Round 1 of the AFL home and away season.

English battled a number of setbacks across the course of the 2022 season to be limited to just the 16 games last year, with hamstring issues and concussion keeping the 205cm ruckman off the field.

The 25-year-old missed five matches in the first half of the season due to a hamstring injury, while English remained in concussion protocols for multiple weeks to miss a further two matches.

An adductor complaint hampered his pre-season program earlier this month, but a fresh hamstring concern has the Bulldogs tall under an injury cloud once again.

According to 7 News' Mitch Cleary, English has been sidelined for the club's match simulation session on Monday morning due to hamstring tightness, with the Western Australian leaving the training track after attempting to warm up.

English's potential setbacks adds to the club's battle with pre-season injuries ahead of the 2022 season, with Adam Treloar (ankle) Bailey Smith (workload), Caleb Daniel (back), Jason Johannisen (calf) and Alex Keath (ankle) all having concerns of their own.

The Dogs have added to their ruck stocks ahead of the new season with the acquisition of Rory Lobb from Fremantle, while young swingman Sam Darcy could be considered for ruck duties should reserve tall Jordon Sweet be overlooked.

Luke Beveridge's side are set to face North Melbourne in their only pre-season match ahead of the regular season, with that encounter to take place on Saturday, March 4 at Ikon Park.

The Bulldogs will have two weeks after that match before their Round 1 clash with Melbourne at the MCG.