By Lou Aguila (staff@latinospost.com) | First Posted: Jun 15, 2013 11:52 PM EDT

Three days passed by at Merion and Phil Mickelson is still on top of the leaderboard with just one more round to go at the US Open Championship.

After experiencing some hiccups earlier in the third round, Lefty made a move late to become the only player under par (1-under 209) after 54 holes.  Mickelson is looking to become only sixth person to win the US Open crown wire-to-wire, joining the likes of Jack Nicklaus (1980), Payne Stewart (1991), Ratief Goosen (2001), Tiger Woods (2000 and 2002) and Rory McIlroy (2011).

After five runner-up heartbreaks (1999, 2002, 2004, 2006, and 2009) at US Open, Mickelson is without doubt closing in on his breakthrough win in the Grand Slam event.

"I love being in the thick of it," Mickelson told ESPN after the third round "I've had opportunities in years past, and it has been so fun, even though it's been heartbreaking to come so close a number of times and let it slide.

South African Charl Schwartzel, and Americans Hunter Mahan and Steve Stricker are very much in contention with just one stroke behind the leader while Tiger Woods seemed headed to another fruitless Grand Slam tournament stint after scoring a 76 on Saturday.

Pressure is building up heading into the final day of competition at Merion as players scramble for one final push towards the prestigious US Open crown.  

Fourth round play starts at 8:44 a.m ET with Mickelson scheduled to kick start his final 18 holes at 3:20 p.m.

Merion GC Tee #1

Group Time Players
130 8:44 am Karlsson, Robert
131 8:55 am Khan, Simon Sutherland, Kevin
132 9:06 am Stanley, Kyle Stefani, Shawn
133 9:17 am Hedblom, Peter Phelan, Kevin
134 9:28 am Peterson, John Weaver, Michael
135 9:39 am Howell, David Kaymer, Martin
136 9:50 am Herman, Jim Weibring, Matt
137 10:01 am Presnell, Alistair Weir, Mike
138 10:12 am Alker, Steven Johnson, Dustin
139 10:23 am Laird, Martin Stallings, Scott
140 10:34 am Teater, Josh Thompson, Nicholas
141 10:45 am Chappell, Kevin Ogilvy, Geoff
142 10:56 am Coetzee, George Knox, Russell
143 11:07 am Pettersson, Carl Siem, Marcel
144 11:18 am Garcia, Sergio Simpson, Webb
145 11:29 am Choi, K.J. Hearn, David
146 11:40 am Kim, Bio Scott, Adam
147 11:51 am Langley, Scott Matsuyama, Hideki
148 12:02 pm Bettencourt, Matt Woods, Tiger
149 12:13 pm Harrington, Padraig Parry, John
150 12:24 pm Huh, John Kuchar, Matt
151 12:35 pm Donaldson, Jamie Pan, Cheng Tsung
152 12:46 pm Goggin, Mathew Snedeker, Brandt
153 12:57 pm Madsen, Morten Orum McIlroy, Rory
154 1:08 pm Dufner, Jason Kelly, Jerry
155 1:19 pm Loar, Edward Watson, Bubba
156 1:30 pm Els, Ernie Van Pelt, Bo
157 1:41 pm Hoffman, Charley Westwood, Lee
158 1:52 pm Casey, Paul Lawrie, Paul
159 2:03 pm Lingmerth, David Senden, John
160 2:14 pm Colsaerts, Nicolas Poulter, Ian
161 2:25 pm Fdez-Castano, Gonzalo Stenson, Henrik
162 2:36 pm Fowler, Rickie Kim, Michael
163 2:47 pm Day, Jason Horschel, Billy
164 2:58 pm Donald, Luke Rose, Justin
165 3:09 pm Schwartzel, Charl Stricker, Steve
166 3:20 pm Mahan, Hunter Mickelson, Phil

US Open TV Schedule

TV Schedule: WATCH Sunday, June 16, 2013: U.S. Open on ESPN, 8:00 a.m. ET | NBC, 3 p.m. ET

US Open Leaderboard

To follow live scores of the 2013 US Open - click here

US Open Radio Streaming

To follow live coverage of the 2013 US Open via Radio - click here

US Open Analysis

To follow latest news and analysis of the 2013 US Open - click here

US Open Live Stream

Live stream coverage of the 2013 U.S. Open can be seen in the morning on WatchESPN.com and will switch at 3 p.m. to NBC Sports Live Extra.