26 players, 5 courts and 13 rounds, with each player getting 10 games and 3 byes is something that might work. For example:
(25 10 v 26 12) (21 8 v 18 15) (24 5 v 22 16) ( 2 13 v 7 3) (11 1 v 19 23) (20 14 9 4 6 17)
(26 11 v 14 13) (22 9 v 19 16) (25 6 v 23 17) ( 3 1 v 8 4) (12 2 v 20 24) (21 15 10 5 7 18)
(14 12 v 15 1) (23 10 v 20 17) (26 7 v 24 18) ( 4 2 v 9 5) (13 3 v 21 25) (22 16 11 6 8 19)
(15 13 v 16 2) (24 11 v 21 18) (14 8 v 25 19) ( 5 3 v 10 6) ( 1 4 v 22 26) (23 17 12 7 9 20)
(16 1 v 17 3) (25 12 v 22 19) (15 9 v 26 20) ( 6 4 v 11 7) ( 2 5 v 23 14) (24 18 13 8 10 21)
(17 2 v 18 4) (26 13 v 23 20) (16 10 v 14 21) ( 7 5 v 12 8) ( 3 6 v 24 15) (25 19 1 9 11 22)
(18 3 v 19 5) (14 1 v 24 21) (17 11 v 15 22) ( 8 6 v 13 9) ( 4 7 v 25 16) (26 20 2 10 12 23)
(19 4 v 20 6) (15 2 v 25 22) (18 12 v 16 23) ( 9 7 v 1 10) ( 5 8 v 26 17) (14 21 3 11 13 24)
(20 5 v 21 7) (16 3 v 26 23) (19 13 v 17 24) (10 8 v 2 11) ( 6 9 v 14 18) (15 22 4 12 1 25)
(21 6 v 22 8) (17 4 v 14 24) (20 1 v 18 25) (11 9 v 3 12) ( 7 10 v 15 19) (16 23 5 13 2 26)
(22 7 v 23 9) (18 5 v 15 25) (21 2 v 19 26) (12 10 v 4 13) ( 8 11 v 16 20) (17 24 6 1 3 14)
(23 8 v 24 10) (19 6 v 16 26) (22 3 v 20 14) (13 11 v 5 1) ( 9 12 v 17 21) (18 25 7 2 4 15)
(24 9 v 25 11) (20 7 v 17 14) (23 4 v 21 15) ( 1 12 v 6 2) (10 13 v 18 22) (19 26 8 3 5 16)
