Reynolds put up 17 points and grabbed a career-best six boards while Ebube scored a career-high 15 points and grabbed eight boards.
With the score tied at 20-20, Manhattan went on a 16-6 run to close the half and go into the break with a 36-26 advantage. The Jaspers opened the second half on a quick, 6-0 run, but Fairfield cut its deficit to 10 points on three occasions in the second half.
Manhattan (5-16, 3-6) shot 51 percent from the floor (23 of 45), including 8 of 15 from deep, and dominated the glass, outrebounding the Stags 37-25.
Jonathan Kasibabu had nine points for Fairfield (6-16, 3-7), which did not have a scorer reach double figures.
Guard Patterson reclassifies for '19; picks Oregon
Addison Patterson, ranked No. 31 in the ESPN 100 for the 2020 class, has reclassified to 2019 and committed to Oregon.
Filings suggest Nike paid in pursuit of players
Newly released emails and text messages in the case against attorney Michael Avenatti suggest that Nike officials were making under-the-table payments to handlers and families of top college basketball prospects.
Buzz Williams' Texas A&M challenge: 'I still think that I have an edge'
If Buzz Williams is to succeed at Texas A&M, his relationships and organizational obsessiveness will likely play key roles in the Aggies' ascent.