The Vikings might not have made one cannonball-type signing, but on the first day of the 2016 league year, they did plenty of splashing around in the free-agent pool.
After treading water during the two-day negotiation window, the reigning NFC North champs moved swiftly Wednesday to address two of their most significant needs.
The Vikings agreed to terms in the morning with former San Francisco 49ers guard Alex Boone. His four-year, $26.8 million deal became official minutes after the 3 p.m. opening whistle and includes $10 million guaranteed, according to a source.