Which sentence is the most subjective statement?
a. roger should have practiced more if he wanted to win the tournament.
b. coaches at the tournament complained that the match-ups were unfair.
c. the tournament was long even though several teams lost in early rounds.
d. roger played in the tournament, but he didn't win a single match.

A. Roger should have practiced more if he wanted to win the tournament.

A subjective statement is one that is based only on a person's perspective. Therefore, it reveals a person's opinion, but cannot be considered a fact. In this case, options B and D provide statements that are falsifiable. This means that we can check whether the statements are right or wrong. This means that the statements are facts. Option C could be a subjective statement, but could also be an objective one (for example, we could compare how long this tournament was compared with other similar ones). However, option A is based only on opinion, as we cannot know whether Roger really should have practiced more to win the tournament.

looks alright to me