GARY Johnson believes Millwall's visit to Huish Park tomorrow is "a cup final."
Johnson, whose side are rooted to the foot of the Championship table, insists the Glovers must take points off the teams around them in the table – starting against the Lions.
Ian Holloway's side, meanwhile, would move nine points clear of bottom spot with a win.
Yeovil were beaten 2-1 by Leeds United last weekend but Johnson says picking up results against relegation rivals is more important in the context of their season.
"Leeds are a lot higher in the table and with a lot more points than teams like Millwall and Doncaster that we've got to play," he said.
"So we have got to be aware that there are better teams and there are teams that are not so good as those better teams.
"We are one of those of course, so we've got to make sure that we perform and get some points on the teams that are in the lower half of the table.
"It [tomorrow's game] is massive. It's one of those cup finals – one of those six-pointers."
Johnson, meanwhile, does not expect Ed Upson to play against his former club.
"I think the two chairmen did that deal," he said.
"I'm pretty sure that, as when you do a loan or in this case a sale, when it's close to playing that person (against his old club) it's probably better for everybody for him not to play in that particular game.
"They'll have him for 18 other games out of the 19, so I'm sure they won't miss him much.
"So it's probably the right thing for the two chairmen to do, and say, 'okay as part of the deal he can't play against us'."
Speaking on Monday, Holloway stated he may back out of the "gentlemen's agreement" regarding Upson's eligibility for the game.