The Jacksonville Jaguars currently sit at 3-1 after dominating the New York Jets in Week 4. The Jags look like one of the NFL’s best teams right now http://www.thejaguarsfootballauthentic.com/malik-jackson-jersey-authentic , but arguably the toughest test of the season thus far looms for Jacksonville, as the team travels to Arrowhead Stadium to play the undefeated Kansas City Chiefs. It’s time for your favorite weekly history lesson (maybe?), as we review the all-time head-to-head matchups between the Chiefs and Jaguars. Similar to last week against the Jets, Jacksonville and Kansas City have a somewhat limited sample size, but a closely contested series history. Series historyAll-time regular season series record: Jaguars lead 6-5Postseason record: N/ALast Jaguars win: Nov. 8, 2009 (24-21)Last Chiefs win: Nov. 6, 2016 (19-14)Current Streak: Chiefs have won three straightBiggest Jaguars win: 24-10 (Nov. 9, 1997)Biggest Chiefs win: 28-2 (Sept. 8, 2013)Interesting takeaway: The Jaguars won six of the first eight meetings with the Chiefs, but have now dropped three in a row. Quick thoughts: Again, Jacksonville dominated the series early on by winning four of the first five and six of the first eight, but Kansas City was able to take advantage of bad Jaguars teams in the past few meetings to bring the series back to close to even. The Jaguars have fared better in Duval, getting four of the six series wins at home. The Chiefs have won three of five at Arrowhead Stadium, and Jacksonville hasn’t won in Kansas City since 2007. Last Matchup Winner: ChiefsScore: 19-14Date: Nov. 6 http://www.thejaguarsfootballauthentic.com/brandon-linder-jersey-authentic , 2016 Location: Arrowhead Stadium, Kansas City, Missouri Team Stats: Jacksonville — 252 passing yards, 205 rushing yards, 25 first downsKansas City — 187 passing yards, 62 rushing yards, 10 first downsQuick recap: Nick Foles got the start for an injured Alex Smith and was OK.A Jaguars team that finished 3-13 thoroughly dominated a Chiefs team that finished 12-4, but found a way to blow it. Jacksonville out-gained Kansas City by 208 yards, and gained 15 more first downs than the opposition. However, the 2016 Jaguars were extremely turnover prone, and lost the turnover battle 0-4. Blake Bortles threw an interception and three different players lost fumbles. The Chiefs built a 19-7 fourth quarter lead, but a T.J. Yeldon touchdown cut it down to a five-point deficit. The offense would get one more chance to score, but could not do it. Previous Matchup: Winner: ChiefsScore: 28-2Date: Sept. 8, 2013Location: EverBank Field http://www.thejaguarsfootballauthentic.com/barry-church-jersey-authentic , JacksonvilleTeam Stats: Jacksonville — 157 passing yards, 71 rushing yards, 12 first downsKansas City — 173 passing yards, 121 rushing yards, 17 first downsQuick recap: This one was not pretty. The Jaguars actually took a 2-0 lead early in the first quarter on a blocked punt safety, but it was all Chiefs after that. Kansas City took a 21-2 lead into the locker room at halftime and coasted through the second half. Blaine Gabbert threw two interceptions, including a fourth quarter pick-six to Tamba Hali. The Chiefs also won the turnover battle in this game, with the two takeaways compared to zero for the Jags. Jacksonville never threatened in this one and it was a typical game during the Gus Bradley era. Series By Decade: 1990s: Jaguars went 2-02000-2010: Jaguars went 4-32011-Present: Chiefs lead 2-0Quick thoughts: This series was fun for the Jaguars in the beginning, winning both matchups in the 1990s and winning two of the first three in the early 2000s. The Jags dominated from the first matchup in 1997 through the fifth all-time matchup in 2004, winning four of the five games in that span. The Chiefs have won four of the last six games overall and three in a row, though. This year offers us one of the most intriguing matchups of the 2018 season already, as two teams with a combined 7-1 record will face off with each other. Patrick Mahomes came down to earth a little bit this past week, but still had a good game and led his team to a comeback victory. It’s going to be really fun to watch Mahomes against the No. 1 pass defense in the league. On the other side, will Jacksonville’s offense be able to take advantage of Kansas City’s shaky defense? This is a true test for both teams. This is a tough one on the road for Jacksonville. How will the Jaguars fare? Of all the things that went right for the Jacksonville Jaguars in 2017 http://www.thejaguarsfootballauthentic.com/jermey-parnell-jersey-authentic , turnovers were at the top of the list.The Jaguars took care of the ball, especially in the postseason, and ranked second in the league with 33 takeaways. They finished the regular season at plus-10 in turnover margin, tied for fifth in the NFL.They're nowhere close to that these days.The Jaguars (3-3) have been careless with the football through six games and have done considerably less to create fumbles and interceptions.The result: Jacksonville sits next to last in turnover margin, a minus-9 ratio that was a key part of consecutive blowout road losses to Kansas City and Dallas.Finding a way to end the trend Sunday against Houston (3-3) could be the difference between first place in the AFC South and a three-game losing streak."We're definitely not helping ourselves out by any means," quarterback Blake Bortles said. "We are getting unlucky. Not only are we not helping ourselves, but we are also getting some bad bounces, and that is part of it."We will start creating our own good fortune, and I think with that we will start getting some breaks and some bounces will go our way as well."The Jaguars could use some better fortune, especially since they are without their top two left tackles, their top two tight ends, two of their top three running backs and their leading receiver from a year ago. The rash of injuries has hampered the offense so much that it failed to score in the first half of the past two games.And the usually stout defense has done little, if anything, to pick up the slack. The unit allowed a combined 802 yards http://www.jaguarscheapstore.com/tashaun-gipson-jersey-cheap , 63 points and 49 first downs against the Chiefs and Cowboys."We haven't lost our confidence," defensive tackle Malik Jackson said. "I think it's a reality check. We understand who we are. We know who we are. I think a lot of us are leaning on the accolades."We want to be Pro Bowlers. We have to be All-Pros. We want to be this, but we have to understand that we just have to play like we did last year, just stay carefree, and the less you care about your accolades off the field, the more we'll win as a team."The Texans have won three in a row in dramatic fashion. They won twice in overtime and beat Buffalo last week thanks to Johnathan Joseph's interception return for a touchdown in the waning minutes.Houston hasn't won four in a row since 2015.Beating Jacksonville could come down to how well Houston's offensive line plays. The Texans allowed 14 sacks in two lopsided losses to the Jaguars last season and have allowed 25 in six games this season, the second-most in the league.Quarterback Deshaun Watson played last week with a partially collapsed lung and a broken rib."I'm fine now. I'm healthy," he said. "I'm cleared to practice, cleared to do everything. I'm good."Bortles should be wary, too. He has been sacked eight times in the past two games while playing behind an injury-riddled line. And now the Jaguars have to deal with J.J. Watt and Jadeveon Clowney.Equally concerning are the team's 14 turnovers and five takeaways."It has not been what we wanted or what we expected or planned for," Bortles said. "Everybody knows that. You learn from it, you put it in the past and you move on. You have to find a way to get back on track and get back to playing like we did against the Jets or against New England or late last year. That is all we are focusing on: getting back to playing the kind of football and the execution level that we know we can do."Here are some other things to know about the Texans and Jaguars:BACK TO BASICSJaguars coach Doug Marrone focused on fundamentals in practice all week, with several players saying they essentially returned to training camp mode in Week 7. Some might consider it a desperation move, but Marrone defended his decision to go back to square one."Anytime you see football being played as poorly as we have been playing http://www.jaguarscheapstore.com/jermey-parnell-jersey-cheap , then it comes down to fundamentals," he said. "That is my philosophy."HAL RETURNSTexans safety Andre Hal, who is in remission after being diagnosed with Hodgkin's lymphoma, resumed practicing this week. He won't play against the Jaguars, but gave the team an emotional lift this week. Hal was diagnosed with the disease in May and immediately began treatment."I'm in the best shape of my life just from working out all the time, eating right, getting closer to God, getting closer to myself, finding out who I am, stuff like that," Hal said. "I'm a better person."PASSING LEAGUEWatson and Bortles have three games each with at least 375 yards passing this season.