A Sixers matchup would be the first time these two have hooked up after the first round since 1985. It's a shame this rivalry lost its steam because it was every bit as bitter as Celts/Lakers for about a 30 year stretch.
1953 Eastern Conference Division Semifinals Celtics won, 20
1954 Eastern Conference Division Finals Nationals won, 20
1955 Eastern Conference Division Finals Nationals won, 31
1956 Eastern Conference Division Semifinals Nationals won, 21
1957 Eastern Conference Division Finals Celtics won, 30
1959 Eastern Conference Division Finals Celtics won, 43
1961 Eastern Conference Division Finals Celtics won, 41
1965 Eastern Conference Division Finals Celtics won, 43
1966 Eastern Conference Division Finals Celtics won, 41
1967 Eastern Conference Division Finals 76ers won, 41
1968 Eastern Conference Division Finals Celtics won, 43
1969 Eastern Conference Division Semifinals Celtics won, 41
1977 Eastern Conference Semifinals 76ers won, 43
1980 Eastern Conference Finals 76ers won, 41
1981 Eastern Conference Finals Celtics won, 43
1982 Eastern Conference Finals 76ers won, 43
1985 Eastern Conference Finals Celtics won, 41
2002 Eastern Conference First Round Celtics won, 3-2