What happened: The Tennessee Titans directed supporters to a donation page for ALS research. The revived campaign has drawn participation across football since early July.
Why it matters: The ALS Association said giving tripled after the campaign returned. Many donors are contributing $28 in tribute to the jersey number behind its revival.
By the numbers: The original 2014 campaign raised an estimated $135 million in the United States and $220 million worldwide.
What to watch: The campaign's next test is whether its growing participation produces sustained donations for ALS research.