ANN ARBOR, Mich. (AP) -- Employees at two bars here have seen some unusually big tips this year. The Ann Arbor News reports that in September a $3,000 tip was left for an $87.98 bill at Bar Louie and $7,000 for a $200 bill at Alley Bar. Alley Bar co-owner Robbie Schulz says he waited on a group of about five guys after University of Michigan's home football game against Notre Dame. He says they arrived about 1:40 a.m., had some drinks and one of them paid with a credit card. Schulz says the tip was split among Alley Bar staff. He says the tippers wanted to remain anonymous. The tips are among a number reported around the country in recent months. They're chronicled on the photo-sharing application Instagram using the "tipsforjesus" name.