Best Player Available - Acronym used in drafting of players in sports. BPA describes the approach of selecting what a team sees as the best talent available in the pool of players instead of taking a player that fill the team's need who doesn't necessarily has the best talent.
An NBA basketball team holds the #1 draft pick. The team needs a player to fill its "Centre" position.
However, the consensus best player available plays the point guard position. The best centre in the draft rank 10th in the pool. By taking the most skilled player, in this case, a point guard, this team take the B.P.A.