I am not a big fan of The Ivy League but this is an ignorant comment. The Ivy League has become one of the best tennis conferences in the country. This year 6 of the 8 teams in the conference were ranked in the final ITA Rankings...Columbia (15), Dartmouth (31), Harvard (33), Cornell (48), Princeton (53) and Penn (60).
Over the last few years, Ivy teams have beaten numerous teams from power conferences. This past season Columbia beat Ok St, Ole Miss (twice), Vandy, SMU (though SMU was not very good this year) and UVA. They played 17 matches against ranked teams. In 2017 they beat TCU (#9) and Purdue (NCAA's 1st round) and in 2016 they beat Stanford (#7), Minnesota (#27) and Vandy (#21). Also, Columbia has been in the Sweet 16 three out of the past five years. They have also qualified for the National Indoors three out of the last five years.
Also this past season: Harvard beat Ok State (1st round NCAA's), Texas Tech, Memphis, Northwestern, South Florida, Old Dominion, Auburn and Utah; ....Dartmouth beat Indiana, Louisville, Minnesota, Rice and Wichita State;...Princeton beat Rice, Auburn and South Florida;...Cornell beat Iowa, Oregon, Wichita State and Penn State;...Penn beat Penn State.
Other notables: In 2017, Dartmouth beat LSU, Cornell beat Oklahoma (16) on the road, Wisconsin (56) on the road, Wichita State (71) on the road, Rice (NCAA's 1st round), Clemson (64), BYU (67), Tennessee (18) and Penn State (52) on the road.
In 2016, Harvard beat Vandy (#21) and ODU (37), Cornell beat Indiana (47), Princeton beat Memphis (25), Penn St (52), Indiana (47) and Iowa (57).