Seoane appeared in seven games for the Cubs in 1978, going 1-0 with a 5.40 earned run average over 8.1 innings of work, including one start.
The previous season he appeared in the first two games of his career, though with the Philadelphia Phillies, who drafted him out of High School in 1973 out of Tampa Bay, Florida.
In that action with Philly he didn’t factor in a decision, started one games, and pitched to an ERA of 6.00 with four earned runs over six innings pitched.
That would be it for him on the Big League level, though he’d continue to pitch through the 1981 season in the Minor Leagues, finishing up in the Detroit Tigers system in both Double and Triple-A.