Sports competitions form an important class of equitable sequencing problems, because strict alternation often gives an unfair advantage to one team. Ignacio Palacios-Huerta proposed changing the sequential order to Thue-Morse to improve the "ex post" fairness of various tournament competitions, such as the kicking sequence of a penalty shoot-out in soccer. He did a set of field experiments with pro players and found that the team kicking first won 60% of games using ABAB (or "T"1), 54% using ABBA (or "T"2), and 51% using full Thue-Morse (or "T"n).  As a result, ABBA is undergoing extensive trials in FIFA (European and World Championships) and English Federation professional soccer (EFL Cup). An ABBA serving pattern has also been found to improve the fairness of tennis tie-breaks. In competitive rowing, "T"2 is the only arrangement of port- and starboard-rowing crew members that eliminates transverse forces (and hence sideways wiggle) on a four-membered coxless racing boat, while "T"3 is one of only four rigs to avoid wiggle on an eight-membered boat.