Calloway was the Eagles' 2nd-round pick in 1969. As a rookie he started 8 games at right defensive tackle, splitting the position with Gary Pettigrew.
In 1970 he took over the left tackle position, replacing long-time veteran Floyd Peters, who was traded to the Redskins. After 5 games, left end Tim Rossovich was moved to middle linebacker, so Ernie slid over to end for the rest of the season, with 1965-67 left end starter Don Hultz regaining a starting role at tackle.
The Birds drafted defensive end Richard Harris with their #1 pick in 1971, and he started 10 games at left end. Calloway made the other 4 starts, and also started 8 games at right tackle, once again in place of Pettigrew.
Ernie only played 5 games in 1972 (all starts), and I recall that he missed most of the season due to injury. In early 1973 he was traded to the Chiefs for defensive end Gerry Philbin, but Pro-Football-Reference.com doesn't have any further NFL time for him after 1972.
He also played for the WFL's Florida Blazers in 1974. He was given a look-see by the Saints in 1976, but did not make the team.
This is his only football card - from the 1973 set.
Where's
Notice he wore #57 as a rookie, before switching to #77.