White Sox pitcher Jeff Samardzija turns in the worst performance of his career

The end of the 2015 regular season is less than three weeks away. It can't come soon enough for White Sox starting pitcher Jeff Samardzija, who is enduring a baffling terrible second half.

Samardzija turned in the worst start of his career Tuesday night as the Sox absorbed a 17-6 pounding at the hands of the Oakland Athletics.

The right-hander put the Sox in a 5-0 hole in the first inning. He failed to make it through the fourth inning -- he didn't record an out in that fourth, in fact -- an inning in which the Athletics would score 10 runs.

Samardzija's final line: 3 IP, 11 H, 10 R, 10 ER, 3 BBs, 3 Ks.

From June 7 through July 28, Samardzija posted 10 straight starts of seven innings pitched or more. His season highlight came July 9 when he threw a four-hit shutout against the best offensive team in the league, the Toronto Blue Jays.

But since Aug. 1, it has all gone very wrong. Samardzija is 1-8 with a 9.24 ERA since that date. On Tuesday, he became just the third pitcher in MLB history to allow nine or more earned runs in a game three times in the same season. The others are Jaime Navarro (1997) and Brett Tomko (2003).

Sox fans are all too familiar with Navarro, and he's unfortunately become a convenient comparison to make with Samardzija.

Navarro, like Samardzija, pitched for the Cubs before joining the Sox and had a respectable amount of success. Navarro went a combined 29-18 with a 3.62 ERA from 1995-96 on the North Side. In 1997, he moved eight miles south to the White Sox and put up poor numbers that rival those of Samardzija this season.

Navarro (1997 White Sox): 9-14, 5.79 ERA, 1.622 WHIP
Samardzija (2015 White Sox): 9-13, 5.27 ERA, 1.354 WHIP

Of course, Navarro was a free-agent acquisition who was making some bucks with the Sox, so that meant his spot in the rotation remained secure no matter how poorly he performed. From 1997-99, he made 87 starts for the South Siders, went 25-43 with a 6.06 ERA and stole $5 million a year from Jerry Reinsdorf. That was big money in late 1990s dollars.

The good news for Sox fans is the Samardzija train wreck won't continue on for three years like the Navarro disaster did. Samardzija's contract is up at the end of the season. You have to believe both the player and team are eager to move on.

Position players pitching in September

Another sign of White Sox mismanagement: Two position players pitched in Tuesday's debacle. Utility man Leury Garcia worked a scoreless eighth inning, while shortstop Alexei Ramirez pitched a scoreless ninth.

Sure, the Sox bullpen has been used a lot this week. Chris Sale lasted only three innings in a Sunday loss to the Minnesota Twins. Monday's game lasted 14 innings, and as we've chronicled, Samardzija was knocked out early Tuesday. But with the September roster expansion, a team shouldn't need to resort to risking the health of position players to eat up innings on the mound.

I'm baffled as to why the Sox didn't allow a Quad-A innings-eater such as Scott Carroll or Junior Guerra to join the roster for the last month of the year. Either of those two men could have saved the Sox some embarrassment in this latest loss.