BALTIMORE -- For a short time in the seventh inning, it appeared David Dahl just might end up scoring the decisive run for Colorado in his major league debut.Alas, the Baltimore Orioles quickly pulled even and ended up winning 3-2 in 10 innings Monday, spoiling Dahls long awaited arrival and ending the Rockies four-game winning streak.Dahl, the 10th overall pick in the 2012 draft, went 1 for 4 with two strikeouts. The 22-year-old was summoned from Triple-A Albuquerque early Monday and traveled across the country from California to Camden Yards.His first hit in the big leagues was a single up the middle in the seventh. He advanced on a wild pitch and scored to give the Rockies a 2-1 lead.I was chasing that high pitch a little bit tonight, kind of just real anxious and nervous, Dahl said. Fortunately, I was able to get a hit and get to second base. Mark Reynolds got a hit and I scored a run to help the team.Batting sixth and playing left field, the rookie went through a variety of emotions.I was very anxious, very excited and it was a great atmosphere, Dahl said. Im glad to get that first game out of the way. Unfortunately, we didnt come away with a win.The Rockies made three errors, which resulted in two unearned runs by the AL East-leading Orioles.In the 10th, Baltimores Adam Jones reached on a one-out single off the third-base bag and took third on a single by Jonathan Schoop. Manny Machado followed with a comebacker to Jordan Lyles, who fumbled the ball before throwing home. Catcher Nick Hundley caught the ball near the ground and lost the handle while attempting to tag the sliding Jones.Lyles (2-3) was charged with an error on the play.I made a good pitch to Machado to get a ground ball, Lyles said. I caught it and looked what to do next and it fell out of my glove. It was just a dumb play. ... Thats a tough way to lose a game.Chaz Roe (1-0) worked the 10th for the victory.Nolan Arenado homered for the Rockies, who mustered only six hits.One of the most surprising aspects of the game occurred in the field, where Arenado made two errors at third base. The three-time Gold Glove Award winner botched a grounder in the first inning and threw wildly to first base in the second, a mistake that led to an unearned run.Arenado came into the game with just one error in 96 games this season.Seeking his 100th career victory, Colorado lefty Jorge De La Rosa got locked in a duel with Yovani Gallardo and failed to get a decision. Coming off a miserable outing in which he gave up a career-high nine runs to Tampa Bay, De La Rosa allowed two runs, one earned, and four hits in 6 1/3 innings.He entered the seventh with a 2-1 lead but was lifted after hitting a batter and giving up a double. Jones greeted Adam Ottavino with a run-scoring groundout.Gallardo gave up two runs and five hits in 6 2/3 innings.After Jones singled in a second-inning run, Arenado led off the fourth by sending a 1-0 pitch into the left-field seats. It was his 26th homer of the season and second in two games.UP NEXTRockies: Chad Bettis (8-6, 5.31 ERA) makes his 21st start of the season Tuesday night in the second game of the series. The Rockies are 7-1 in his last eight starts.Orioles: RHP Chris Tillman (14-2, 3.18) seeks his major league-leading 15th victory. Hes allowed one run over seven innings in each of his last four starts. Discount Custom NBA Jerseys . Perez, 35, posted a 1-2 record with a 3.69 earned-run average in 19 relief appearances last season. His season ended Aug. 9 due to a torn ligament in his left elbow. Perez joins infielder Andy LaRoche and catcher Mike Nickeas with minor-league agreements for 2014 that include invitations to attend spring training. Sale Custom NBA Shirts . The Celtics closed out their first preseason under Stevens on Wednesday night with a 101-97 victory over the Brooklyn Nets, who rested a lot of their lineup including former Celtics Kevin Garnett and Paul Pierce. http://www.customjerseysnba.com/ . Jane Virtanen scored two, and Alex Roach and Elliott Peterson rounded out the offence for the Hitmen (40-15-6). Brady Brassart chipped in with three assists. Colton McCarthy scored twice, Brayden Point had a goal and two assists, and Jack Rodewald also scored for the Warriors (15-35-9), who were 2 for 5 on the power play. Custom NBA Jerseys . Jeff Green scored 13 points and Kris Humphries 12 for the Celtics, who nearly blew an 18-point, second-half lead. Sullingers 20-20 was the first by a Celtics player since Kevin Garnetts first game in Boston in 2007. Garnett was dealt -- along with Paul Pierce -- to Brooklyn during the off-season. Wholesale Custom NBA Jerseys . Nathan MacKinnon, Jamie McGinn and Jan Hejda also scored for the Avalanche, who won despite being outshot 38-23. MacKinnons goal, also on the power play, came with just over a minute remaining. Mercedes broke the mechanics curfew overnight at the U.S. Grand Prix in order to make a precautionary change of the fuel system on Lewis Hamiltons car.In order to prevent team members working unnecessarily long hours, the FIA imposes an eight-hour curfew between Friday and Saturday for paddock personnel working on the cars. In Austin the curfew ran between 23:00-07:00 but Merrcedes mechanics worked within that time to fit a new fuel system.ddddddddddddTeams get two exceptions from the curfew per season, so no penalty will be imposed on Mercedes which had not broken curfew at any point this season ahead of this weekend. ' ' '