The Houston Astros have shocked the world with their first half performance in 2015 that has left them just 0.5 games out of first place in the American League West. Sources close to the team say they know they need reinforcements in their starting rotation to keep up the pace, and that Cincinnati Reds ace Johnny Cueto is their top target.

CBS' Jon Heyman wrote, "The Astros have keen trade interest in Reds starter Johnny Cueto, and it appears he may even be their top target." Cueto has had a stellar 2015 campaign, posting a 6-6 record with a 2.73 ERA and sparkling 0.90 WHIP over 17 starts (118.2 innings). Cueto is being prioritized over Philadelphia Phillies ace Cole Hamels, although it's unclear if the reason for that is Hamels' reported unwillingness to accept a trade to Houston or something else.

Trading for Hamels is very different from dealing for Cueto. Hamels is under control through 2019 at $23.5 million per season; that is not chump change, but it is more reasonable than starting pitcher salaries have become in recent years. For example, Cueto is only on the trade block because his performance the past two years have led Cueto and his representation to expect a long-term deal this offseason that will pay out upward of $200 million.

The Reds' precarious playoff position complicates these discussions though. Most believe Cueto's price tag for 2016 and beyond are the key factor in his availability via trade, but the Reds are on the fringe of playoff contention (7.5 games out of the second wildcard spot). The Reds have not given indication they are shopping Cueto right now, and Heyman reported that Cincinnati general manager Walt Jocketty hasn't responded to text messages about Cueto.

Should Cueto be dealt to the Astros, he will join left-hander Dallas Keuchel, the American League starter in tonight's All-Star Game.

[CBS]