I actually own Seguin in a league and value him highly, but with your positions - LW, etc. I'd actually keep what you have. Tara on the wing will be very valuable. And as previously stated, you are loaded at C. I like where your roster is at. You have Markstrom in the wings, rewdy to replace Luongo. I wouldn't mess that up.

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League: Yahoo 20 Team Dynasty, H2H (4C, 8W, 6D, 1G)
Cats: +/-, FOW, A, G, GWG, PPP, SHP, SOG, S, SPct, W, GAA

C: Benn,Kopitar,J.Staal,Strome
W: Atkinson,Bennett,BrunnerConacher
Huberdeau,Kessel,Seguin,Selanne
D: Beaulieu,DeKeyser,Despres,D.Hamilton,Leopold,Salo
G: J.Howard
Bench: Braun,B.Flynn,B.Gordon - J.Bernier,O.Pavelec,V.Stalberg
Prospects: Andrighetto,V.Arvidsson,Filatov,G.Carey,K.Flanagan,Kabanov,Lehtera,Omark,Ritchie,
R.Schwartz,Shalunov,Stransky,
Clendening,Deslauriers,Gauthier-Leduc,J.Morrow,R.Murphy,Petrovic,Reilly, -- M.Hackett