Jalen Ramsey, All-Pro Cornerback, Traded to Rams

A series of bold acquisitions helped propel the Los Angeles Rams to the Super Bowl last season. With his team flailing, General Manager Les Snead splurged on Tuesday to improve its chances of returning.

Of the three moves Snead made, none was more significant than the deal for the All-Pro cornerback Jalen Ramsey from Jacksonville. In return, the Jaguars got three draft picks, including the Rams’ next two first-round selections and a fourth-round pick in 2021.

The Rams seized on a very public stalemate between the Jaguars and Ramsey, who missed practice time and his team’s last three games for a multitude of reasons — illness, a back injury, the birth of his child — after requesting a trade following a sideline altercation with Coach Doug Marrone during the team’s 13-12 loss in Houston in Week 2.

The Jaguars had been reluctant to part with Ramsey, whom they drafted at No. 5 over all in 2016, but the Rams’ assertive offer swayed them.

Ramsey is one of only three cornerbacks who has held quarterbacks throwing his way to a passer rating below 80.0 in each season since 2016, according to Pro Football Focus. He now will front a revamped Los Angeles secondary, which on Monday placed cornerback Aqib Talib on the injured reserve list with a rib injury.

The shake-up on Tuesday also claimed cornerback Marcus Peters, one of Snead’s biggest off-season acquisitions in 2018. Peters was dealt to Baltimore in exchange for linebacker Kenny Young and a pick in the 2020 draft, widely reported to be a fifth-rounder.

The Rams also bolstered their sagging offensive line, a bulwark last season, by acquiring center Austin Corbett, a second-round pick in 2018, from the Cleveland Browns.

As the Rams (3-3) try to regain equilibrium after three straight losses plunged them into third place in the N.F.C. West — behind the division-leading San Francisco 49ers (5-0) and Seattle Seahawks (5-1) — Snead embarked on a one-day makeover that encapsulated his aggressive approach. Last off-season he traded for the speedy receiver Brandin Cooks and acquired three former All-Pros — Peters, Talib and defensive tackle Ndamukong Suh.

Near the trade deadline last year, the Rams added the edge rusher Dante Fowler, who created a pivotal interception in overtime of their N.F.C. championship win in New Orleans by thumping quarterback Drew Brees as he threw. Fowler came from the Jaguars, and the Rams can only hope that Ramsey, their latest import from Jacksonville, has the same kind of effect.