NEW YORK -- Saturday is known as moving day on the PGA Tour, and that works at this hopping, popping US Open too. Mike Ditka Jersey . Players are vying for a coveted spot in the second week and a berth in the fourth round. Heres what you need to know on Day 5:Watch every matchAt 11 a.m. ET, ESPN3 will carry full coverage of seven matches. Click to watch?multicam.?At 11 a.m. ET, ESPN and WatchESPN begin coverage. Click to watch.?To view starting times of upcoming days at the US Open, click here.?Live scoringOur real-time scoreboard, updated stats and social handles can be found on one spot, US Open CourtCast.?BracketsFind out whos moving on (and whos not) with our US Open mens and womens brackets. ?Saturdays key matchesNo. 11 David Ferrer versus Juan Martin del Potro, third match on Louis Armstrong Stadium (Watch) The unseeded del Potro hasnt dropped a set in two matches at the US Open and is playing some sizzling tennis this summer, highlighted by his run to the Rio Olympics final. These two have quite a history, encompassing nine matches. Del Potro won the last one, at Wimbledon in 2013. Ferrer is 34 years old and still a handful.No. 1 Serena Williams versus?Johanna Larsson, not before 1 p.m. ET on Arthur Ashe Stadium (Watch)Worries about the sore right shoulder that forced Serena to withdraw from Cincinnati seem to have vanished. She isnt hitting the ball as cleanly as she would like, but shes been composed, which will help her going forward. Williams is 2-0 head-to-head against the Swedish player.No. 2 Andy Murray versus Paolo Lorenzi, after Serena-Larson (Watch)Murray has looked like the favorite so far, averaging better than 6-3 for each of his six sets. The two have played only once, and it was 10 years ago in Adelaide, Australia. Murray won in three sets.No. 21?Ivo Karlovic versus James Donaldson, fourth match on Court 17 (Watch)??The 19-year-old American has defied gravity so far, and now he has a chance to reach the second week here. Hell have to get past Karlovic, who stroked a US Open-record 61 aces in his first-round match and 24 more in the second.No. 6 Venus Williams versus No. 26 Laura Siegemund, 7 p.m. ET on Arthur Ashe Stadium (Watch)This might be tougher than it looks. Venus, 36, was extended to three sets in her first-round match and tends to fatigue as the matches mount. Siegemund reached the quarterfinals of the Olympics, losing to eventual gold medalist Monic Puig.No. 14 Nick Kyrgios versus Illya Marchenko, after Venus- Siegemund (Watch)Kyrgios, the brash 21-year-old Aussie, has been making waves again this fortnight. You never know what hes going to do on court, but more often than not, he wins. At the US Open, hes won all six sets. Marchenko, the 28-year-old Ukrainian, is one set over the minimum. http:///...yle-long-jersey.aspx . PETERSBURG, Fla. Zach Miller Jersey . Burke is expected to miss two to three months after breaking a finger in the teams third preseason game. Tinsley, a 10-year veteran, spent the last two seasons in Utah, where the point guard averaged 3. http:///...callahan-jersey.aspx . - After leading the Saints to a fourth playoff appearance in five seasons, Drew Brees expressed confidence in the direction of his team and, perhaps more importantly, showed a willingness to listen to contract proposals if the team needs his help getting under the NFLs salary cap. CINCINNATI -- For a few days, the Bengals defense gets to remind Mike Zimmer of what he built.Zimmers Minnesota Vikings were in town Wednesday for the first of two joint practices leading up to their preseason opener Friday night at Paul Brown Stadium. Zimmer was the Bengals defensive coordinator from 2008-13, developing one of the NFLs top defenses.The defense hasnt changed a whole lot -- most of the same players, most of the same schemes -- while Zimmer has turned the Vikings back into a winner. And the Bengals defenders were looking forward to reminding Zimmer of why theyve been so good.He changed the culture around here, and I have much love and much respect for coach Zimmer, defensive lineman Domata Peko said before their first combined practice. I cant wait to go out and hit some of his players.Zimmer has been friends with the Bengals Marvin Lewis since their days as college coaches. Lewis likes to work out against opposing teams during training camp; its more of a challenge. Last year, the New York Giants practiced in Cincinnati for a couple of days before their preseason game.The Vikings were a natural preseason matchup for pr