Running backs typically dominate the early rounds in year-to-year fantasy football leagues, but dynasty league owners have the task of constructing rosters based on future performance.

With that philosophy in mind, ESPN NFL Insider Matt Williamson ranked his top 100 players for dynasty leagues ; a list that includes a pair of Chicago Bears wide receivers in the top 21.

Alshon Jeffery is one of the top wide receivers for fantasy dynasty league owners. Tim Fuller/USA TODAY Sports

The highest-rated Bears player on Williamson's board is fourth-year wideout Alshon Jeffery, who checks in at No. 11 overall. Williamson is confident that Jeffery -- 85 catches, 1,133 receiving yards and 10 touchdowns in 2014 -- assumes the Demaryius Thomas role in Adam Gase's new offense in Chicago.

In a bit of a surprise, Williamson lists a first-year round pick as the No. 21 overall dynasty league player, one slot ahead of fellow rookie receiver Amari Cooper of the Oakland Raiders. This clearly illustrates Williamson's belief that Kevin White is capable of contributing immediately in the NFL. Some draft analysts voiced concern that White played just two seasons at West Virginia. But in White's final year with the Mountaineers, he tore up college football with 109 receptions for 1,447 yards and 10 touchdowns.

Veteran tailback Matt Forte is the 55th best dynasty league fantasy option, according to Williamson. Even though Forte leads the NFL in yards from scrimmage (11,431) since 2008, running backs are often devalued in dynasty leagues because of the lack of longevity associated with the position.

Forte is entering the final year of his contract, but expects to report to training camp in late July without issue.