The 36-year-old, who is on the board of directors for his home tournament, surged into the lead with a six-under 65 on Sunday but Matteson -- who had led from the first round -- made up for a double bogey at 15 as he eagled 17 and forced the playoff with his 69.
The Red Devils have already come through a third-round match-up at Manchester City, after a 3-2 win at the Etihad Stadium.
Frenchman Gilles Simon crushed 18-year-old American qualifier Donald Young 6-1 6-3 to set up a second-round meeting with world number one Roger Federer on Wednesday.
Second seed Caroline Wozniacki came from behind to defeat Bulgarian qualifier Tsvetana Pironkova 3-6 6-3 6-4 and set up a third-round tie with Russia's Maria Kirilenko.
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World No. 46 Andreas Seppi beat his fellow Italian, qualifier Stephane Bohli, 6-1 7-5 to set up a second-round clash with either Serbian eighth seed Viktor Troicki or Austria's Jurgen Melzer.
Defending champion Federer, who said before the start of the tournament that he was "excited" by the return of Nadal to top flight action, thrashed Croatia's Ivan Dodig 6-3 6-1 to set up a fourth-round clash with his friend and fellow Swiss Stanislas Wawrinka .
Clark enjoyed a bogey-free round and picked up four shots for a solid day's work.
The 2008 finalist and seventh seed, Jo-Wilfried Tsonga demolished Slovakia's Blaz Kavcic 6-2 6-1 6-4 to set up a fourth round meeting with compatriot Richard Gasquet who also completed a straight-sets victory (6-3 7-6 6-0) over Ivan Dodig.
Every weekday from 1300 to 1600, Simon Mayo brings news, sport, show-biz and in-depth interviews following the one hour Midday News which offers a full round-up of all the latest stories, sport, money and Euronews.
The leading Associate countries now play a year-round schedule, with only Kenya currently boasting a contracted line-up.
The Australian won their first-round encounter 4-6 7-5 6-2 to set up a meeting with Russian veteran Yevgeny Kafelnikov in round two.
Meanwhile, Munich Open winner Mikhail Youzhny made an early exit to Latvian Ernest Gulbis 7-6 6-4 and 15th seed Stanislas Wawrinka set up a third-round showdown with world number one and Swiss compatriot Roger Federer after beating Leonardo Mayer, who was down 6-4 4-2 when he retired.
Two days after rallying for a 142-134 triple-overtime victory, the Bulls were outscored 15-1 at the finish and failed to set up a second-round series with Miami.
The Spaniard was the only seed to fall in the first round, while Taylor Dent, ranked 83rd in the world, set up a second-round encounter against world number one Rafael Nadal after beating Feliciano Lopez 6-3 6-2.
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Maria Sharapova was even more convincing a few hours earlier, winning 6-0, 6-0 for the second time in two matches to set up a third-round encounter with Venus Williams.
But the 2008 French Open champion, who also beat Azarenka on her way to the semi-finals in Rome in May, fought back to set up a second-round clash with Yaroslava Shvedova.
BBC: Ana Ivanovic beats Victoria Azarenka at Cincinnati Open
Here's a round-up of some of the day's seemingly hoax reports which are, in fact, entirely true.
Lifehacker has a round-up of tools and sites to help you identify and stop those tracking you.
Stewart was hurt again by a hook in the fourth round and a follow-up straight left weakened him further.
Here is a round-up of homes of literary icons from the past and present, some of which are even on the market now.
Defending champion Davide Sanguinetti brushed aside fellow Italian Giorgio Galimberti 6-2 6-4 in his first-round match to set up a meeting with Max Mirnyi of Belarus.
The left-hander followed up his opening round of 70 with a string of birdies -- nine in all -- and an eagle with the only bogey coming six holes from home.
So why would a human being saddle up for a 100-mile round trip to the big city?
The National Conference of State Legislatures has a nice round-up of breastfeeding laws.
Mr Saad has delivered a light round-up of the latest studies in evolutionary behavioural science.
Kitco News has a thorough round-up of that group here on Forbes.com.
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Liberia's government, having declared a state of emergency after rebels attacked a town near the capital, Monrovia, embarked on a big round-up of suspects.
Below is a nice round-up of the fidaxomicin results from Bloomberg.
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