Holbeach United captain Jamie Stevens has been ruled out for ‘a few months’.
The central defender was carried off after half an hour of Tuesday’s 1-0 win at Boston Town following an awkward fall on the edge of the penalty box.
Stevens went to hospital at half-time and checks showed severe ligament damage in his right ankle.
Matt Warfield slotted into the heart of the Tigers’ back four alongside Jonny Clay in the midweek victory.
Assistant manager Tom Roberts said: “I’m sure a lot of people don’t even see what Matt does on the pitch.
“So much of his work will often go unnoticed but he has been superb for us in several positions.
“We knew it was going to be a battle at Boston and we’ve accepted that.
“We couldn’t really put two passes together all night but we scored a goal and won the game.
“We had to make sure it wasn’t a case of ‘after the Lord Mayor’s Show’ following the FA Cup win at Wisbech Town on Saturday.
“It wasn’t just about the back four, though, because we worked really hard from the top.
“We won the battles and Rick Drury made two very good saves to keep his third clean sheet in a row.
“We knew it would take a few weeks to get things right and there’s more to come.”
Holbeach are ready to add three players to their squad for Saturday’s home game against Oadby Town.
Midfielder Ollie Gale is set to complete a move from Wisbech, defender Nick Jackson will be eligible after sitting out the trip to his former club Boston Town and ex-Spalding United striker Jordan Thomas should make his debut.
Ollie Pinner completes a three-match suspension but Stacy Cartwright should be available after illness.