Individual sports can get incredibly heated. Imagine being in the semifinals of a club tennis tournament, tied at 5-5 in the final set tiebreak. Two players separated by a net – eyes locked scores aligned, tensions flaring. In those critical instances, a dispute in score could set everything ablaze: vehement exchange of insults, indefinite pause of play, arrival of arbitrator, and an otherwise extraordinary match ending in enraged controversy. That’s a common problem associated with amateur racket sports, in which players frequently lose track of scores in the heat of the moment.