I V. WORLD CHAMPIONSHIPS winner of the head-to-head matchup between the two remaining teams  advance, if still tied then, Comment : 11-1 win-loss beats 11-0 win-loss. A 5-7 win-loss beats 5-0  record ii) The team with the most match wins (singles & doubles), if still tied then, iii) The team with the highest percentage of matches won, if still tied then, iv) The team that has the highest percentage of sets won, if still tied then,  v) The team with the highest percentage of games won,  e) If ii), iii), iv) or v) produce one superior team (first place), then the tie is broken,  or f) If ii), iii), iv) or v) produce one inferior team then that team is eliminated and  the winner of the match between the two (2) remaining teams is the winner of  the group. Notes : In all tie-break situations, the following shall apply. • Unplayed matches shall be scored as completed for purposes of matches  played.  • Defaulted and retired singles or doubles matches shall be scored as complet - ed for purposes of matches played and will count as a straight set win or loss.  However, games won or lost in matches with defaulting or retiring player shall  not be counted for percentage of games won. • Teams advancing from a tie via a team walkover (i.e. no alternate) will count  as a tie won but this does not count towards total matches won, percentage  of sets or percentage of games won. •  Any team that withdraws from any round robin tie after the first-round robin tie  shall not be eligible for the single elimination tournament. • The Match Tie-Break (doubles) counts as a set won and for games won  counts as 1-0 4) The Knock-out Rounds a) The four (4) teams advancing to the knock-out rounds shall be placed in the  draw as follows: b) The Champion Team shall be decided by the result of a straight knock-out  competition. Winner Group A (#1 seed group) placed on line 1 Winner Group B (#2 seed group) placed on line 4 Winner Group C (#3 seed group) placed on line 3 Winner Group D (#4 seed group) placed on line 2 E. Protected Ranking The following applies to any player with a Protected Ranking (“PR”) that has been  used in any manner during the competition or to qualify a country for entry. 1) The PR must be valid at the entry deadline in which the player/country qualifies. 2) If valid at the entry deadline for qualification it shall remain valid throughout the  competition. 3) Can be used for team entry. 4) Will count for position in the singles lineup. 62 63 I V. WORLD CHAMPIONSHIPS 5) Will count for FedEx ATP Ranking points. 6) Will not count for team seeding. 7) Will not count as Protected Ranking used for the player(s). 8) May only be used at one (1) ATP Cup event. Note : A team included in the draw by a player’s Protected Ranking will be drawn  with the 9-12 group. F. Schedule of Play The following is the schedule of play unless otherwise determined by the Tournament  Committee and Supervisor: 1)  The twelve (12) teams shall play Round Robin matches the first three days to  determine the four (4) winners of the Round Robin groups.  2) Following the draw, the daily ties (country v country) for the round robin sessions  will be scheduled and announced. 3) All players and Captains must be available for play on the first day of the event.  4) Once the Captain has named the two (2) players competing in the singles, the  pairings for the Tie shall be made automatic as determined by the FedEx ATP  Ranking (including Protected Ranking) on the Monday prior to the start of the  competition. 5) Protected Ranking (singles) will be used for a player’s position on the team but  cannot be used for team seeding. 6) The final shall be held on the 5th day (Friday) of the Tournament. 7) The ATP Supervisor reserves the right to change the schedule of play, alter start - ing times and make other changes deemed necessary for the smooth running of  the competition. G.Team Captain / Team Coaches 1) Designation of Captain a)  The number one player on each team is by default the Team Captain. The  number 1 player has the option, after consultation with his team members, to  appoint a Captain, provided such person is of same nationality* and meets  one (1) of the following criteria: *In 2021, due to the extraordinary circumstances related to Covid-19, the #1  player may request, subject to ATP approval, to appoint a captain of a differ - ent nationality. i) A Division I Player Member, in good standing, or ii) An ATP Coach member, in good standing, or iii) A Captain or coach of the Federation iv) If not meeting criteria established in i), ii) or iii) above, the name of the  proposed Captain must be submitted to the ATP Coaches Committee at  least 10 days in advance for approval. b) The Captain must be communicated to ATP no later than 5:00 PM (Eastern  US) on the Wednesday following the entry deadline of 28 December 2020.