*Paul* said:
Do the coaching staff in the NFL get to see any footage before making a challenge, or does it have to be a quick call?
They have until the next play to call a challenge. So frequently they do get to see at least one replay of the previous play before the next but it is not guaranteed. For a Touchdown, they have until the ball is snapped for the conversion which means they always get a chance to look at a replay before challenging those. On the other hand if the defense cops a bad call in general play and the other team is running a fast no huddle offense then they may not get a replay in before the next play. In those cases the coaches some times have to challenge just based on their own first impressions, or on feedback from their players or they have to challenge totally blind simply because the particular play is just too important to let stand. The art of challenging has become a team skill as much as tackling and passing. And running quick follow on plays before the opposition has time to decide whether they want to challenge has equally become a skill.
Of course Rugby League is a very different beast. While being able to fit at least one replay in between plays is the norm rather than the exception in the NFL, League is a free flowing game where there can be up to eighteen or more consecutive plays before there is a break long enough to show a replay. Some situations map pretty easily. Challenges of Tries based on replays shown while the conversion is being lined up are pretty straight forward. As are challenges of No Tries resulting in scrums or drop outs (in fact the potential for a challenge might even encourage defenses to stop wasting time and get on with taking their drop outs quickly before their opponents get a look at a replay). Basically any play that ends in a scrum, drop out or Try works pretty well in a challenge system. There is plenty of time for the aggrieved team to think about how important it is to them to challenge the call, how confident they are that they'll win it and look at a replay or two in advance of the challenge.
On the other hand plays that result in a turnover of possession, a penalty, or any other situation where a team can tap or play the ball straight away do not map so easily to the NFL example. If we allow challenges outside of simply Tries or No Tries, do we allow challenges during continuing play or only at stoppages? If only at stoppages, do we allow a challenge for incidents beyond the last play or do we introduce/maintain the inconsistency of only being able to address match turning errors if they occur on a tackle where play ends? So if the referee misses a dropped ball on tackle two and the team scores a try on tackle five, do we allow that to be challenged or do we only allow a challenge if the dropped ball occurred after tackle four? Or do we only allow the error on tackle two to challenged if the challenge is made there and then before the next play? I think the answer to how we deal with this very much depends on what limits are placed on the number of challenges. The last thing we want to see is continuing play being pulled up seven or eight times per match for challenges. On the other hand once or twice during continuing play at crucial turning points of the game and then once or twice more for tries/no tries is in my opinion probably tolerable, perhaps even desirable if it catches the most crucial match turning errors.
If we stuck with the NFL example and allowed only two challenges per team per game (and a third only if the first two were successful), and we had a cost for an unsuccessful challenge of one or two forfeited interchanges, then personally I'd have no problem with allowing challenges in general play (ie. beyond just Tries/No Tries). With those sorts of limits we could be assured of not seeing endless interruptions and lots of trivial challenges. And with only two challenges and a strategy changing cost for unsuccessful challenges, teams would have to preserve their challenges for those calls that really turn the game and generally only challenge when they feel they have a reasonable chance of winning it. Which brings me back to the question of limits. How much leeway do we allow? The absolute most I'd want to see is allowing teams to challenge any call in the last set of six tackles or the last minute of play - whichever is less. And once play restarts after a stoppage, you can't challenge anything before that. If you can't make up your mind that you want to challenge in that amount of time, then the call wasn't important enough to you to justify a challenge anyway.
Leigh.