Next season's FA Cup could break new ground following the announcement that clubs could be allowed a fourth substitute in extra-time from the quarter-finals onwards.
There will, of course, be no replays after the quarters any more so the need to kill a game off could come down to these fourth subs. We've trawled back through the past three years to find out which players are best at getting up off the pine and scoring.
Here's your fourth sub experts (and it's pretty good news for Liverpool)...
1. Christian Benteke (Liverpool)
The big Belgian striker didn't make much of an impact in his first season at Liverpool last season, although he did score six times in 15 substitute appearances. Last season's FA Cup finalists Crystal Palace have been heavily linked with him - maybe he's the man to take them that final extra step?
2. Divok Origi (Liverpool)
Liverpool, Belgian, striker... we're seeing a theme here. Origi had a great strike-rate off the bench for the Reds last season scoring four times in nine sub appearances. That's a strike rate of 44%, which no other player who has scored more than two substitute goals can match over the past three campaigns.
3. Daniel Sturridge (Liverpool)
Sturridge's injury record makes him a prime candidate to be rested in cup action, but a late introduction could bear fruit - he has four goals in 11 substitute appearances across the past three Premier League seasons, as well as his memorable Euro 2016 winner for England against Wales.
4. Sadio Mane (Liverpool)
Er, have Liverpool centred their transfer spending around these stats already? Mane has made the move to Anfield from Southampton where he scored three goals in seven sub appearances last term. One of these Liverpool strikers is actually going to have to start on the field.
5. Kevin Mirallas (Everton)
Keeping on a Liverpool theme and the Reds' cross-park rivals Everton have a super-sub of their own... and he's Belgian. No-one has scored more than Mirallas's six goals off the bench in the Premier League over the past three seasons, although his strike-rate of 21% is the lowest of the top-ranked players.
6. Andy Carroll (West Ham)
Also haunted by injuries, Carroll's direct style makes him a fine impact substitute - Chelsea twice bore the brunt last season, with further goals against Southampton and champions Leicester in 14 appearances from the bench.
7. Olivier Giroud (Arsenal)
Regularly deployed from the bench by Arsene Wenger, the France frontman hit substitute goals against Stoke, Leicester and Watford in the league and Bayern Munich in the Champions League last term and added two in six the previous season.
8. Aleksandar Mitrovic (Newcastle)
The super-sub role appears to suit physical target men. Where Mitrovic is concerned, it may be an effective way of channelling his aggression into proving his worth - Tottenham found that to their cost in Newcastle's dramatic comeback win in December, as did Norwich as he scored twice and peppered them with six shots having come on after the hour mark in April's 3-2 win.
9. Steven Naismith (Norwich)
Naismith managed the unusual achievement of a hat-trick as a substitute last season - albeit having replaced the injured Muhamed Besic only nine minutes into Everton's win over Chelsea, prior to his January move to the Canaries. He added a goal and an assist in a 15-minute run-out for Scotland against Gibraltar too.