Fox, who started with just over half a million in chips, more than doubled his stack for the day but his 1,186,000 in chips trails the 2.1 million of Chang by quite a bit heading into Day 4.
Still, Fox’s stack in good enough for a spot in the top five with just Bodo Sbrzesny (1.7m), Konstantin Danilov (1.37m) and Michael Gagliano (1.26m) between him and Chang.
Chang, whose live scores have all come in either Taipei or Australia, is the lone player to crack 2 million in chips but he’ll be hard pressed to keep his advantage with a tough field behind him.
MacPhee, Mercier Stumble but Survive
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Among the challengers in the remaining 22 players is 2010 EPT Berlin winner Kevin MacPhee.
MacPhee has hovered around the chip lead for much of the tournament so far but dropped slightly off the pace today to finish with 697,000 in chips.
MacPhee had topped 1 million at one point but gave a big chunk back to Sbreszny, who took three streets of value from him late in the day.
Also still in contention are Dane Lars Bonding (531,000), Irishman Dermot Blain (480,000), 2011 WPT Vienna winner Dmitry Gromov (461,000) and German Fabian Quoss (279,000).
Hanging on by the skin of his teeth but still alive as the short stack going into Day 4 is PokerStars pro Jason Mercier (214,000).
Busting out but making the money today were Shannon Shorr, Toby Lewis, Elisabeth Hille and Lucille Cailly.
Play picks up on Day 4 tomorrow in Prague at 1 pm local time and will play down to a final table.
Follow the live updates here; check the top 10 in chips below:
1. Tony Chang, 2,173,000 2. Bodo Sbrzesny 1,703,000 3. Konstantin Danilov 1,377,000 4. Michael Gagliano 1,266,000 5. Elio Fox 1,186,000 6. Marcin Wydrowsky 1,118,000 7. Yann Dion 877,000 8. Frank Stumpf 772,000 9. Sergey Vasilyev 768,000 10. Alexander Lakhov 720,000Visit www.pokerlistings.com