The Milwaukee Bucks edged Boston 106-102 Tuesday night in what could be a preview of the first round of the N-B-A playoffs.  The win moves Milwaukee into a three-way tie for sixth place in the Eastern Conference with Washington and Miami.  Boston is in second.  Giannis Antetokounmpo had 29 points, 11 rebounds and six assists as Milwaukee split the season series with the Celtics.  Khris Middleton scored 20, with eight rebounds and nine assists.  Boston cut the lead to three, 103-100, with 22 seconds left, but Atetokounmpo nailed a pair of free throws to win it.  The Bucks can clinch a post-season berth with a win over Brooklyn Thursday at home.