WCOOP $25K High-roller Heads-up Event on PokerStars

Iftarii tanked this for over a minute before calling.   Sick slowroll.  A bit unclassy.   stevesbets probably thought he was good for sure here (ie against a draw only)

PokerStars Game #32807124802: Tournament #200909027, $25000+$500 USD Hold’em No Limit - Match Round II, Level III (80/160) - 2009/09/13 17:52:42 ET
Table ‘200909027 16′ 2-max Seat #2 is the button
Seat 1: Iftarii (21579 in chips)
Seat 2: stevesbets (18421 in chips)
stevesbets: posts small blind 80
Iftarii: posts big blind 160
*** HOLE CARDS ***
stevesbets: raises 160 to 320
Iftarii: raises 800 to 1120
stevesbets: calls 800
*** FLOP *** [4s 6d 5s]
Iftarii: bets 1500
stevesbets: raises 15801 to 17301 and is all-in
Iftarii: calls 15801
*** TURN *** [4s 6d 5s] [Qd]
*** RIVER *** [4s 6d 5s Qd] [7c]
*** SHOW DOWN ***
Iftarii: shows [8s 7s] (a straight, Four to Eight)
stevesbets: shows [4c 5c] (two pair, Fives and Fours)
Iftarii collected 36842 from pot
*** SUMMARY ***
Total pot 36842 | Rake 0
Board [4s 6d 5s Qd 7c]
Seat 1: Iftarii (big blind) showed [8s 7s] and won (36842) with a straight, Four to Eight
Seat 2: stevesbets (button) (small blind) showed [4c 5c] and lost with two pair, Fives and Fours