Marques Douglas just got some competition. The Dolphins added the former Saint today, according to NFL.com's Sam Wyche. Grant will be 32 in early September and had 5.5 sacks before missing the playoffs due to an injury he suffered in week 17. At 6'3, 285, Grant will convert to a 3-4 DE after playing his whole career as a 4-3 DE. It's also important to note that Grant must serve a four game suspension to start the 2010 season stemming from a positive drug test in 2008.