'WPA is tricky because there’s an innate desire to use it as a measure of “which player has delivered when it matters most!” In reality, it’s far more complicated than that because it’s an additive measure. To accrue big WPA totals, you need to be presented with many opportunities to come through with the game on the line. A player with a 5.0 WPA for the year hasn’t necessarily been more “clutch” than one with a 2.0 WPA, they may simply have had many chances with the bases loaded late in close games. WPA is not highly predictive. Generally, it is not used for player analysis and projecting the future ' Talk about a stat with limitations. And as far as LOB% goes, without looking at other stats (BABIP and HR/FB), doesn't give us much info (kind of like RBI). But even still, Rays are average in that department (and most pitchers are average in LOB%) with an average ERA. If they had a low ERA and a low LOB percentage, they might have an issue. Might expect that ERA to go up when the LOB% went back up. 'Most pitchers have LOB%s around league average (which is approximately 70-72%, depending upon the season), and pitchers that deviate from that average tend to see their numbers regress towards average in the future. In other words, if you see a pitcher with a 60 LOB%, they are letting lots of runners score so their ERA will be high, but the odds are that they will strand more runners in the future and lower their ERA. I don't really put too much into these particular stats for player analysis, mostly because the people who make it tell us not to when describing them.. Along with the rankings I gave earlier (K/9, FIP, ERA, WAR), their rotation has the 5th best BAA, 4th best OBP against, 4th best OPS against. Being top 5 in all those (along with K/9, and FIP) while being 6th in WAR and 7th in ERA, in a division that boasts the 1st, 2nd and 4th highest scoring teams in the AL, is in no way a disaster. By comparison, Twins are last in the AL in OPS against (23 point worse than the team that sits 14th), 14th in the AL in OBP against, last in the AL in BAA, last in ERA (by a lot), 11th in FIP, 14th in K/9, 12th in WAR. This in a division that boast no team in the top 5 in runs scored in the AL. That's a disaster.