Coach Andy McMahon has told Spalding’s squad to get fitter and improve their attitude – or face “a very long season”.
They have lost both games so far this season after securing promotion into Midlands One East.
Last weekend’s display in losing 62-3 at Bugbrooke left McMahon angered as he called for a big response at home to Derby on Saturday.
He said: “They did very well last season, although not quite enough to get promoted, and they are a very strong side.
“They have recruited a few players as well.
“We had a few words last Saturday at Bugbrooke and that didn’t go down too well. But now it’s up to the lads to respond to that.
“I know they want to enjoy playing rugby again but first some of them need to get fit.
“Some of the guys haven’t been to pre-season training and others who came down didn’t do enough in terms of their fitness.
“They did a little bit too much in handling and skills sessions when they weren’t fit enough.
“Now they have realised that they need to do something about it very quickly.
“Bugbrooke weren’t a great side. They worked well together and understood our play.
“We had a few players who got frustrated and tried to play the game on their own. That was when we got turned over and they scored tries quite freely.
“In the last two games we have not seen a lot of pride in the shirts.
“It’s down to the players – otherwise it will go away very quickly and become a very long season for them.
“I’m not bothered if they play well and lose to a better team.
“But they need to have the right attitude and be whole-hearted. We need commitment from everyone.”
Saturday is also the club’s Presidents Day.
The ground will be open from noon on both days this weekend with league matches for the first and second teams on Saturday plus a junior match and vets tournament on Sunday.
Both days also feature a barbecue, children’s games and a beer festival while ska/reggae band Zebroots play on Saturday night.