Saints coach Nathan Brown has criticised the RFL for scheduling the crunch Challenge Cup tie with Leeds just five days after the Easter Monday clash with Widnes.
It means his side are set to face Wigan, Widnes and Leeds later this month - in the space of just eight days.
Brown said: “The RFL have been doing a lot of good stuff with the World Cup and the new TV deal but it’s not clever to put the fifth round of the Challenge Cup the week after Easter. It’s really poor.
“Either Easter Monday’s not an important game in their eyes or the Challenge Cup’s not an important game. There’s just too much pressure on teams.
“It’s alright if you’re Wigan and you draw Hunslet but when Leeds and St Helens draw each other it’s the biggest game of the year. I don’t see the common sense in the timing. It’s the worst possible time you could pick to play that game.”
He added: “Don’t get me wrong - it’s the same for Leeds. We’re both in the same boat, but an unlucky Easter could ruin a genuine chance of a Challenge Cup.”