The Houston Astros failed to sign the first pick in this years draft, San Diego high school left-hander Brady Aiken, before Fridays deadline. The head of the players association says the union is working with the pitcher and his advisers to explore "all legal options." Aiken originally was offered a deal with a $6.5 million signing bonus by the Astros, a person familiar with the negotiations said earlier this week, speaking on condition of anonymity because no statements were authorized. But the club expressed a concern over Aikens elbow ligament and lowered the offer, the person said. The union is also concerned with Houstons handling of the negotiations with fifth-round pick Jacob Nix. The right-hander from Los Alamitos, California, didnt sign either. "Today, two young men should be one step closer to realizing their dreams of becoming Major League ballplayers," union head Tony Clark said in a statement. "Because of the actions of the Houston Astros, they are not. The MLBPA, the players and their advisers are exploring all legal options." The Astros insisted in a statement that their offer to Aiken "was extremely fair considering all the factors involved in this case." "As always, we approached these negotiations in good faith and with the best interests of the Astros organization in mind, both short-term and long-term," the team said. "Throughout this entire process, we have absolutely acted within Major League Baseballs rules and guidelines, which MLB has confirmed on numerous occasions." MLB Executive Vice-President Dan Halem defended the team Tuesday and said "we fully support the Astros." "We believe that they have conducted themselves appropriately," Halem added. Aiken was just the third high school pitcher to be selected first overall when he was taken last month, joining fellow lefties Brien Taylor (1991, Yankees) and David Clyde (1973, Rangers). He was also the first high school lefty to be drafted in the first five picks since Adam Loewen went fourth overall to Baltimore in 2002. Both Aiken and Nix have committed to UCLA and are being advised by Casey Close. The Astros were the first team to select first in three consecutive drafts, picking shortstop Carlos Correa in 2012 and right-hander Mark Appel last year. Aiken has terrific control of a fastball that hits 96-97 mph, a knee-buckling curve and a tough changeup that sits in the low- to mid-80s. On draft day, Astros general manager Jeff Luhnow raved: "Its the most advanced high school pitcher Ive ever seen in my entire career." "He has command like Ive never seen before of his stuff," the GM said. Cameron Jordan Jersey .J. -- Pitcher Carl Pavano is retiring after 14 major league seasons. Bobby Hebert Youth Jersey . "Youre next." Hardly. Iguodala tormented his former team with a game better than any he ever played in eight seasons with the 76ers. http://www.saintsrookiestore.com/Saints-Tre-Quan-Smith-Jersey/ . INJURIES - Reds RF Jay Bruce is facing knee surgery for a torn meniscus and it could cost him a month of playing time. Chris Heisey, who has shown some pop (43 home runs, . Michael Thomas Jersey . -- The way Ted Ligety carved into turns looked so easy. Ted Ginn Jr Saints Jersey . Golden States second straight road win wasnt painless. David Lee scored a season-high 29 points -- 13 in the fourth quarter -- and Nate Robinson added 17 points, leading the Warriors to a 105-95 win Tuesday night over the road-worn Cleveland Cavaliers.Branden Grace is hoping a successful week at the RBC Heritage can once again be the performance which kickstarts his season. The South African overcame a three-shot deficit during his final round at Harbour Town to post a five-under 66 and finish two shots clear of Luke Donald and Russell Knox.Victory is Graces first ever on the PGA Tour and his second of 2016, following his triumph on the European Tour at the Qatar Masters, with the 27-year-old now hoping to replicate the run he managed after last years appearance in this tournament. Grace mixed seven birdies with two bogeys during the final round Ending tied-seventh in South Carolina last year sparked a run of form which saw Grace finish inside the top-20 a further 12 times worldwide during 2015, including top-four finishes at the US Open and PGA Championship, giving him plenty of encouragement for the months ahead.Its awesome and is something I have dreamt of, Grace told Sky Sports. Ive been out here over the past couple of years and have given myself some chances, so this is great. Graces Heritage glory Final round report from the RBC Heritage I played some flawless golf, even with two bogeys, but it was a tough day out there and you just had to grind it out.This is pretty much where it (form) started last year for me, as I had my first top-10 here on the PGA Tour last year and then it just kicked off. Graces win followed a missed cut at last weeks Masters I was in a really good frame of mind coming in to this event and Im now excited to see how the year turns out.ddddddddddddDonald, who has now made six top-three finishes since 2009 in this event, was joined in a tie-for-second by Knox after the Scot posted a final-round 67.Knox broke in to the worlds top 50 with victory at last years WGC-HSBC Champions and was also a runner-up at the OHL Classic, with the 30-year-old delighted with his form ahead of a potentially busy year.Today I was thrilled, I played great all day and hit some nice putts at the end there, Knox told Sky Sports. I was happy with the way I conducted myself and the shots over the last few holes. Russell Knox now has three top-two finishes on the PGA Tour this season I played beautifully on the first day, but I just made a mess of the first couple of holes which turned a good round in to a terrible feeling.Of course winning again and the Ryder Cup are goals of mine now, but Im just trying to enjoying it. Im so fortunate to be playing in these great tournaments, so Ive just go to soak it all in and go for it.The next event on the PGA Tour is the Valero Texas Open , which youll be able to watch live throughout the week on Sky Sports 4 - your home of golf Also See: Grace claims Heritage title RBC Heritage highlights Harbour Town leaderboard Golf live on Sky Sports 4 ' ' '