The following information has been taken from various sections of the MHSAA Tennis Coaches Manual from 2014-2015.  The manual can be viewed below:  2014-2015 Tennis Coaches Manual

1.       Reminders, page 4 - #3:  the best player on the team must play #1 singles

2.       Stacking, page 4 – Stacking is having players not in ranked order as defined by the MHSAA rules. Any line-up changes must be verified by current challenge matches. Challenge Match – a coach needs written verification to explain his/her line-up and must use a consistent format throughout the year for such.

3.       General Rules, page 6 - #9 Dual Matches 9A:  Ranking of Players – 1. The best player on the team must play number one singles. 2. Doubles players may be better in ability than the remaining singles players, but the players in either singles or doubles must be ranked in order of ability. 3. Doubles teams shall be ranked according to the ability of the two players as a team and not as individuals. 4. Temporary illness or absence of any player shall not change rules 1 or 2 above. For instance, if the second singles player on a team is ill and unable to play in a match, his or her replacement must be a better player than those playing third singles and fourth singles. Forfeits for lack of available players must come in fourth singles or fourth doubles. A coach may not forfeit the first singles position if the first singles player is unable to play. The coach must MOVE the lineup so that the players in singles and the teams in doubles are ranked according to ability. If an individual substitution into a doubles team occurs, the ranked order of the doubles team still must prevail. EXCEPTION: Unless prohibited by conference rules, allow a coach to substitute directly into the line-up for any absent player, upon approval of the other coaches.

4.       From the MHSAA Website:  MHSAA Establishing a Justifiable Line Up - The Michigan High School Athletic Association Tennis Rules and Policies require: “The best player shall play No. 1 Singles”. “All team members are to be ranked in position according to their ability (Singles flight one through four OR Doubles flights one through four). Doubles teams shall be ranked according to the ability of the two players as a team and not as individuals”.