Table 4. The probability player A wins a tiebreak set, given player A serves first and the service-game order is A,B,B,A,A,B,B,A,A,B,B,A (column 4) and when the service order is A,B,B,A;B,A,A,B;B,A,A,B (column 5). PA PB D Col4 Col5 .50 .50 .10 .5000 .5000 .55 .55 .10 .5023 .5017 .60 .60 .10 .5046 .5032 .65 .65 .10 .5069 .5046 .70 .70 .10 .5092 .5056 .75 .75 .10 .5116 .5062 .80 .80 .10 .5141 .5060