Slowey and Steady

Kevin Slowey had a solid year for the Twins, posting a 3.99 ERA in 160 innings. Slowey’s biggest strength is his impeccable control – he issued only 24 walks in 160 innings, the lowest walk rate (1.35 per nine) of any pitcher who pitched at least 100 innings this year.

However, Slowey also struck out his share of hitters, accumulating 123 strikeouts. But what’s more, Slowey appeared to improve his strikeout rate as the season wore on.

In his first ten starts of the season, Slowey sported a solid 4.37 ERA, and had walked only nine batters in 57 innings. However, true to scouting reports, had struck out only 39 – for a rate of 6.15 per nine. This was more than enough to get by, considering his incredibly low walk rate, but it was far from dominant.

But then Slowey had a start in San Diego.

I don’t know if there is a pitcher in baseball better suited for PETCO Park than Kevin Slowey – a flyball pitcher who attacks the strike zone. Slowey predictably pitched very well on June 24 in San Diego, allowing no runs or walks in six innings, and striking out seven. And for only the second time all season, Slowey induced ten swinging strikes in his start.

Slowey carried this into his next two starts, inducing seventeen and ten swinging strikes in them, respectively. And from that point forward, Slowey was a different pitcher.

Starting with his June 24 start in San Diego, Slowey finished the season with a 3.77 ERA in 102 innings. He still walked a phenomenally low amount of hitters – 15, to be exact – but his strikeouts went up. In those 102 innings, he struck out 84 batters, for a rate of 7.41 per nine. He remained homer-prone, allowing 12 long balls during the stretch, but the increase in strikeouts was coupled with an increase in the amount of swinging strikes he induced as well.

Before June 24, batters swung and missed at 7.9% of Slowey’s pitches. After (and including) June 24, batters swung and missed at 9.2% of his pitches. During this time, Slowey received approximately the same percentage of called strikes. In other words, batters were taking pitches for strikes just as often, but were swinging and missing more often, leading to additional strikeouts.

It would be okay for a pitcher who walks as few batters as Slowey to only strike out six batters per nine. But if a pitcher like Slowey can get that strikeout rate up over seven per nine, then we’re talking about someone with a good chance of posting an ERA around 3.50 (or lower) – even with his propensity to give up homers. Furthermore, Slowey’s absurdly low walk rate helps keep his WHIP low, giving him increased value in fantasy leagues.

Slowey has always been a fly ball pitcher – almost 45% of his balls in play were fly balls this year – and, since he doesn’t throw particularly hard, he is almost certainly going to be prone to the long ball. However, he’s so stingy with free passes that many of the homers hit against him are going to be solo shots. Furthermore, if he can maintain the pace at which he was striking batters out during the second half of the season, he will curtail his homer total simply because batters won’t put as many balls in play.

Think of Kevin Slowey as someone who can post an ERA of around 4, a WHIP of around 1.15 or 1.20, with a strikeout rate of approximately six batters per nine (which equates to 133 Ks over 200 innings) who plays on a good-but-not-great team. It’s unlikely that Slowey will be much worse than this.

However, if the Slowey we saw in the second half of the season is for real, he is capable of putting up an ERA of around 3.40-3.60, with a WHIP in the 1.10 range and a strikeout rate of 7.5 per nine (equaling 167 Ks over 200 innings). This may be optimistic, but Slowey has shown that he is capable of putting up these numbers for an extended period of time.

Draft Slowey expecting the conservative set of numbers – which are still pretty good. But don’t be surprised if he exceeds those expectations.