ST. PAUL, Minn. – Tuesday marked the beginning of the University of Northwestern Men’s Tennis team’s most grueling stretch of the season (outside of the state of Florida, at least). Northwestern is scheduled to play five matches in five days, beginning with a home tilt with the class of the American Rivers Conference, the Luther College Norse. The Eagles hung tight through doubles play but ultimately lost, 1-8. When a brief rain shower interrupted the doubles matches, UNW appeared to be in good shape, leading two of the three matches at the time. Unfortunately for Matt Swigart ‘s squad, the…