ELMA, N.Y. -- Running back Fred Jackson brought the coolers filled with bottled water and sports drinks. Quarterback Ryan Fitzpatrick brought the laughs as several Buffalo Bills opened their NFL-lockout version of a voluntary minicamp Monday.

Proudly displaying his sweat-soaked T-shirt after a 40-minute running and conditioning session, Fitzpatrick winked and said, "That's why I wore a grey T-shirt, so it looks like I was working hard."

With no end to the NFL labor dispute in sight, this is about as lathered up for football as Fitzpatrick and his colleagues can get these days. He was one of about 35 Bills -- plus a handful of undrafted rookie free agents -- taking part in a two-hour informal workout inside a suburban Buffalo sports complex that doubles as home to the Western New York Flash of the Women's Professional Soccer League.

It was the first of five informal workout sessions the players have scheduled for this week in what amounts to the team's largest reunion since the Bills cleaned out their lockers a day after their season ended in January.

"It's like old home week," cracked center Geoff Hangartner.

Fitzpatrick was impressed with the turnout after he hosted a smaller group of teammates for workouts in Arizona last month.

"It always helps when you're working out with other people, especially your teammates," Fitzpatrick said. "I thought it went as well as expected today."

Monday's workout was limited to agility, strength and conditioning sessions. The players split time working out in the weight room and on the field. Fitzpatrick expects he'll get an opportunity to start throwing passes to build chemistry with his receivers later in the week.

Reminders of the lockout were still prevalent.

With team staff barred from attending because of the lockout, the players brought in two private trainers, Bob Bateson and Demeris Johnson, to oversee the workouts.

Before the players stepped on the field, they were required to sign a waiver so the owners of the facility weren't held responsible for anyone getting hurt. A reporter was asked to seek a facility staff member to mop up a pool of water that had collected in a hallway after rain blew in through an open doorway.

And the players had to switch fields near the end of their workout to make room for the start of the Flash practice.